drivers/net/ethernet/intel/i40e/i40e_main.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 21
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  85         /* required last entry */
  86         {0, }
  87 };
  88 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  89
  90 #define I40E_MAX_VF_COUNT 128
  91 static int debug = -1;
  92 module_param(debug, int, 0);
  93 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  94
  95 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  96 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  97 MODULE_LICENSE("GPL");
  98 MODULE_VERSION(DRV_VERSION);
  99
 100 /**
 101  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 102  * @hw:   pointer to the HW structure
 103  * @mem:  ptr to mem struct to fill out
 104  * @size: size of memory requested
 105  * @alignment: what to align the allocation to
 106  **/
 107 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 108                             u64 size, u32 alignment)
 109 {
 110         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 111
 112         mem->size = ALIGN(size, alignment);
 113         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 114                                       &mem->pa, GFP_KERNEL);
 115         if (!mem->va)
 116                 return -ENOMEM;
 117
 118         return 0;
 119 }
 120
 121 /**
 122  * i40e_free_dma_mem_d - OS specific memory free for shared code
 123  * @hw:   pointer to the HW structure
 124  * @mem:  ptr to mem struct to free
 125  **/
 126 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 127 {
 128         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 129
 130         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 131         mem->va = NULL;
 132         mem->pa = 0;
 133         mem->size = 0;
 134
 135         return 0;
 136 }
 137
 138 /**
 139  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 140  * @hw:   pointer to the HW structure
 141  * @mem:  ptr to mem struct to fill out
 142  * @size: size of memory requested
 143  **/
 144 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 145                              u32 size)
 146 {
 147         mem->size = size;
 148         mem->va = kzalloc(size, GFP_KERNEL);
 149
 150         if (!mem->va)
 151                 return -ENOMEM;
 152
 153         return 0;
 154 }
 155
 156 /**
 157  * i40e_free_virt_mem_d - OS specific memory free for shared code
 158  * @hw:   pointer to the HW structure
 159  * @mem:  ptr to mem struct to free
 160  **/
 161 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 162 {
 163         /* it's ok to kfree a NULL pointer */
 164         kfree(mem->va);
 165         mem->va = NULL;
 166         mem->size = 0;
 167
 168         return 0;
 169 }
 170
 171 /**
 172  * i40e_get_lump - find a lump of free generic resource
 173  * @pf: board private structure
 174  * @pile: the pile of resource to search
 175  * @needed: the number of items needed
 176  * @id: an owner id to stick on the items assigned
 177  *
 178  * Returns the base item index of the lump, or negative for error
 179  *
 180  * The search_hint trick and lack of advanced fit-finding only work
 181  * because we're highly likely to have all the same size lump requests.
 182  * Linear search time and any fragmentation should be minimal.
 183  **/
 184 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 185                          u16 needed, u16 id)
 186 {
 187         int ret = -ENOMEM;
 188         int i, j;
 189
 190         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 191                 dev_info(&pf->pdev->dev,
 192                          "param err: pile=%p needed=%d id=0x%04x\n",
 193                          pile, needed, id);
 194                 return -EINVAL;
 195         }
 196
 197         /* start the linear search with an imperfect hint */
 198         i = pile->search_hint;
 199         while (i < pile->num_entries) {
 200                 /* skip already allocated entries */
 201                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 202                         i++;
 203                         continue;
 204                 }
 205
 206                 /* do we have enough in this lump? */
 207                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 208                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 209                                 break;
 210                 }
 211
 212                 if (j == needed) {
 213                         /* there was enough, so assign it to the requestor */
 214                         for (j = 0; j < needed; j++)
 215                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 216                         ret = i;
 217                         pile->search_hint = i + j;
 218                         break;
 219                 } else {
 220                         /* not enough, so skip over it and continue looking */
 221                         i += j;
 222                 }
 223         }
 224
 225         return ret;
 226 }
 227
 228 /**
 229  * i40e_put_lump - return a lump of generic resource
 230  * @pile: the pile of resource to search
 231  * @index: the base item index
 232  * @id: the owner id of the items assigned
 233  *
 234  * Returns the count of items in the lump
 235  **/
 236 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 237 {
 238         int valid_id = (id | I40E_PILE_VALID_BIT);
 239         int count = 0;
 240         int i;
 241
 242         if (!pile || index >= pile->num_entries)
 243                 return -EINVAL;
 244
 245         for (i = index;
 246              i < pile->num_entries && pile->list[i] == valid_id;
 247              i++) {
 248                 pile->list[i] = 0;
 249                 count++;
 250         }
 251
 252         if (count && index < pile->search_hint)
 253                 pile->search_hint = index;
 254
 255         return count;
 256 }
 257
 258 /**
 259  * i40e_find_vsi_from_id - searches for the vsi with the given id
 260  * @pf - the pf structure to search for the vsi
 261  * @id - id of the vsi it is searching for
 262  **/
 263 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 264 {
 265         int i;
 266
 267         for (i = 0; i < pf->num_alloc_vsi; i++)
 268                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 269                         return pf->vsi[i];
 270
 271         return NULL;
 272 }
 273
 274 /**
 275  * i40e_service_event_schedule - Schedule the service task to wake up
 276  * @pf: board private structure
 277  *
 278  * If not already scheduled, this puts the task into the work queue
 279  **/
 280 static void i40e_service_event_schedule(struct i40e_pf *pf)
 281 {
 282         if (!test_bit(__I40E_DOWN, &pf->state) &&
 283             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 284             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 285                 schedule_work(&pf->service_task);
 286 }
 287
 288 /**
 289  * i40e_tx_timeout - Respond to a Tx Hang
 290  * @netdev: network interface device structure
 291  *
 292  * If any port has noticed a Tx timeout, it is likely that the whole
 293  * device is munged, not just the one netdev port, so go for the full
 294  * reset.
 295  **/
 296 #ifdef I40E_FCOE
 297 void i40e_tx_timeout(struct net_device *netdev)
 298 #else
 299 static void i40e_tx_timeout(struct net_device *netdev)
 300 #endif
 301 {
 302         struct i40e_netdev_priv *np = netdev_priv(netdev);
 303         struct i40e_vsi *vsi = np->vsi;
 304         struct i40e_pf *pf = vsi->back;
 305         struct i40e_ring *tx_ring = NULL;
 306         unsigned int i, hung_queue = 0;
 307         u32 head, val;
 308
 309         pf->tx_timeout_count++;
 310
 311         /* find the stopped queue the same way the stack does */
 312         for (i = 0; i < netdev->num_tx_queues; i++) {
 313                 struct netdev_queue *q;
 314                 unsigned long trans_start;
 315
 316                 q = netdev_get_tx_queue(netdev, i);
 317                 trans_start = q->trans_start ? : netdev->trans_start;
 318                 if (netif_xmit_stopped(q) &&
 319                     time_after(jiffies,
 320                                (trans_start + netdev->watchdog_timeo))) {
 321                         hung_queue = i;
 322                         break;
 323                 }
 324         }
 325
 326         if (i == netdev->num_tx_queues) {
 327                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 328         } else {
 329                 /* now that we have an index, find the tx_ring struct */
 330                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 331                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 332                                 if (hung_queue ==
 333                                     vsi->tx_rings[i]->queue_index) {
 334                                         tx_ring = vsi->tx_rings[i];
 335                                         break;
 336                                 }
 337                         }
 338                 }
 339         }
 340
 341         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 342                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 343         else if (time_before(jiffies,
 344                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 345                 return;   /* don't do any new action before the next timeout */
 346
 347         if (tx_ring) {
 348                 head = i40e_get_head(tx_ring);
 349                 /* Read interrupt register */
 350                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 351                         val = rd32(&pf->hw,
 352                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 353                                                 tx_ring->vsi->base_vector - 1));
 354                 else
 355                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 356
 357                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 358                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 359                             head, tx_ring->next_to_use,
 360                             readl(tx_ring->tail), val);
 361         }
 362
 363         pf->tx_timeout_last_recovery = jiffies;
 364         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 365                     pf->tx_timeout_recovery_level, hung_queue);
 366
 367         switch (pf->tx_timeout_recovery_level) {
 368         case 1:
 369                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 370                 break;
 371         case 2:
 372                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 373                 break;
 374         case 3:
 375                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 376                 break;
 377         default:
 378                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 379                 break;
 380         }
 381
 382         i40e_service_event_schedule(pf);
 383         pf->tx_timeout_recovery_level++;
 384 }
 385
 386 /**
 387  * i40e_release_rx_desc - Store the new tail and head values
 388  * @rx_ring: ring to bump
 389  * @val: new head index
 390  **/
 391 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 392 {
 393         rx_ring->next_to_use = val;
 394
 395         /* Force memory writes to complete before letting h/w
 396          * know there are new descriptors to fetch.  (Only
 397          * applicable for weak-ordered memory model archs,
 398          * such as IA-64).
 399          */
 400         wmb();
 401         writel(val, rx_ring->tail);
 402 }
 403
 404 /**
 405  * i40e_get_vsi_stats_struct - Get System Network Statistics
 406  * @vsi: the VSI we care about
 407  *
 408  * Returns the address of the device statistics structure.
 409  * The statistics are actually updated from the service task.
 410  **/
 411 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 412 {
 413         return &vsi->net_stats;
 414 }
 415
 416 /**
 417  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 418  * @netdev: network interface device structure
 419  *
 420  * Returns the address of the device statistics structure.
 421  * The statistics are actually updated from the service task.
 422  **/
 423 #ifdef I40E_FCOE
 424 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 425                                              struct net_device *netdev,
 426                                              struct rtnl_link_stats64 *stats)
 427 #else
 428 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 429                                              struct net_device *netdev,
 430                                              struct rtnl_link_stats64 *stats)
 431 #endif
 432 {
 433         struct i40e_netdev_priv *np = netdev_priv(netdev);
 434         struct i40e_ring *tx_ring, *rx_ring;
 435         struct i40e_vsi *vsi = np->vsi;
 436         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 437         int i;
 438
 439         if (test_bit(__I40E_DOWN, &vsi->state))
 440                 return stats;
 441
 442         if (!vsi->tx_rings)
 443                 return stats;
 444
 445         rcu_read_lock();
 446         for (i = 0; i < vsi->num_queue_pairs; i++) {
 447                 u64 bytes, packets;
 448                 unsigned int start;
 449
 450                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 451                 if (!tx_ring)
 452                         continue;
 453
 454                 do {
 455                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 456                         packets = tx_ring->stats.packets;
 457                         bytes   = tx_ring->stats.bytes;
 458                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 459
 460                 stats->tx_packets += packets;
 461                 stats->tx_bytes   += bytes;
 462                 rx_ring = &tx_ring[1];
 463
 464                 do {
 465                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 466                         packets = rx_ring->stats.packets;
 467                         bytes   = rx_ring->stats.bytes;
 468                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 469
 470                 stats->rx_packets += packets;
 471                 stats->rx_bytes   += bytes;
 472         }
 473         rcu_read_unlock();
 474
 475         /* following stats updated by i40e_watchdog_subtask() */
 476         stats->multicast        = vsi_stats->multicast;
 477         stats->tx_errors        = vsi_stats->tx_errors;
 478         stats->tx_dropped       = vsi_stats->tx_dropped;
 479         stats->rx_errors        = vsi_stats->rx_errors;
 480         stats->rx_dropped       = vsi_stats->rx_dropped;
 481         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 482         stats->rx_length_errors = vsi_stats->rx_length_errors;
 483
 484         return stats;
 485 }
 486
 487 /**
 488  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 489  * @vsi: the VSI to have its stats reset
 490  **/
 491 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 492 {
 493         struct rtnl_link_stats64 *ns;
 494         int i;
 495
 496         if (!vsi)
 497                 return;
 498
 499         ns = i40e_get_vsi_stats_struct(vsi);
 500         memset(ns, 0, sizeof(*ns));
 501         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 502         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 503         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 504         if (vsi->rx_rings && vsi->rx_rings[0]) {
 505                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 506                         memset(&vsi->rx_rings[i]->stats, 0 ,
 507                                sizeof(vsi->rx_rings[i]->stats));
 508                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 509                                sizeof(vsi->rx_rings[i]->rx_stats));
 510                         memset(&vsi->tx_rings[i]->stats, 0 ,
 511                                sizeof(vsi->tx_rings[i]->stats));
 512                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 513                                sizeof(vsi->tx_rings[i]->tx_stats));
 514                 }
 515         }
 516         vsi->stat_offsets_loaded = false;
 517 }
 518
 519 /**
 520  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 521  * @pf: the PF to be reset
 522  **/
 523 void i40e_pf_reset_stats(struct i40e_pf *pf)
 524 {
 525         int i;
 526
 527         memset(&pf->stats, 0, sizeof(pf->stats));
 528         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 529         pf->stat_offsets_loaded = false;
 530
 531         for (i = 0; i < I40E_MAX_VEB; i++) {
 532                 if (pf->veb[i]) {
 533                         memset(&pf->veb[i]->stats, 0,
 534                                sizeof(pf->veb[i]->stats));
 535                         memset(&pf->veb[i]->stats_offsets, 0,
 536                                sizeof(pf->veb[i]->stats_offsets));
 537                         pf->veb[i]->stat_offsets_loaded = false;
 538                 }
 539         }
 540 }
 541
 542 /**
 543  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 544  * @hw: ptr to the hardware info
 545  * @hireg: the high 32 bit reg to read
 546  * @loreg: the low 32 bit reg to read
 547  * @offset_loaded: has the initial offset been loaded yet
 548  * @offset: ptr to current offset value
 549  * @stat: ptr to the stat
 550  *
 551  * Since the device stats are not reset at PFReset, they likely will not
 552  * be zeroed when the driver starts.  We'll save the first values read
 553  * and use them as offsets to be subtracted from the raw values in order
 554  * to report stats that count from zero.  In the process, we also manage
 555  * the potential roll-over.
 556  **/
 557 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 558                                bool offset_loaded, u64 *offset, u64 *stat)
 559 {
 560         u64 new_data;
 561
 562         if (hw->device_id == I40E_DEV_ID_QEMU) {
 563                 new_data = rd32(hw, loreg);
 564                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 565         } else {
 566                 new_data = rd64(hw, loreg);
 567         }
 568         if (!offset_loaded)
 569                 *offset = new_data;
 570         if (likely(new_data >= *offset))
 571                 *stat = new_data - *offset;
 572         else
 573                 *stat = (new_data + BIT_ULL(48)) - *offset;
 574         *stat &= 0xFFFFFFFFFFFFULL;
 575 }
 576
 577 /**
 578  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 579  * @hw: ptr to the hardware info
 580  * @reg: the hw reg to read
 581  * @offset_loaded: has the initial offset been loaded yet
 582  * @offset: ptr to current offset value
 583  * @stat: ptr to the stat
 584  **/
 585 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 586                                bool offset_loaded, u64 *offset, u64 *stat)
 587 {
 588         u32 new_data;
 589
 590         new_data = rd32(hw, reg);
 591         if (!offset_loaded)
 592                 *offset = new_data;
 593         if (likely(new_data >= *offset))
 594                 *stat = (u32)(new_data - *offset);
 595         else
 596                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 597 }
 598
 599 /**
 600  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 601  * @vsi: the VSI to be updated
 602  **/
 603 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 604 {
 605         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 606         struct i40e_pf *pf = vsi->back;
 607         struct i40e_hw *hw = &pf->hw;
 608         struct i40e_eth_stats *oes;
 609         struct i40e_eth_stats *es;     /* device's eth stats */
 610
 611         es = &vsi->eth_stats;
 612         oes = &vsi->eth_stats_offsets;
 613
 614         /* Gather up the stats that the hw collects */
 615         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 616                            vsi->stat_offsets_loaded,
 617                            &oes->tx_errors, &es->tx_errors);
 618         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 619                            vsi->stat_offsets_loaded,
 620                            &oes->rx_discards, &es->rx_discards);
 621         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 622                            vsi->stat_offsets_loaded,
 623                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 624         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 625                            vsi->stat_offsets_loaded,
 626                            &oes->tx_errors, &es->tx_errors);
 627
 628         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 629                            I40E_GLV_GORCL(stat_idx),
 630                            vsi->stat_offsets_loaded,
 631                            &oes->rx_bytes, &es->rx_bytes);
 632         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 633                            I40E_GLV_UPRCL(stat_idx),
 634                            vsi->stat_offsets_loaded,
 635                            &oes->rx_unicast, &es->rx_unicast);
 636         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 637                            I40E_GLV_MPRCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->rx_multicast, &es->rx_multicast);
 640         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 641                            I40E_GLV_BPRCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->rx_broadcast, &es->rx_broadcast);
 644
 645         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 646                            I40E_GLV_GOTCL(stat_idx),
 647                            vsi->stat_offsets_loaded,
 648                            &oes->tx_bytes, &es->tx_bytes);
 649         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 650                            I40E_GLV_UPTCL(stat_idx),
 651                            vsi->stat_offsets_loaded,
 652                            &oes->tx_unicast, &es->tx_unicast);
 653         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 654                            I40E_GLV_MPTCL(stat_idx),
 655                            vsi->stat_offsets_loaded,
 656                            &oes->tx_multicast, &es->tx_multicast);
 657         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 658                            I40E_GLV_BPTCL(stat_idx),
 659                            vsi->stat_offsets_loaded,
 660                            &oes->tx_broadcast, &es->tx_broadcast);
 661         vsi->stat_offsets_loaded = true;
 662 }
 663
 664 /**
 665  * i40e_update_veb_stats - Update Switch component statistics
 666  * @veb: the VEB being updated
 667  **/
 668 static void i40e_update_veb_stats(struct i40e_veb *veb)
 669 {
 670         struct i40e_pf *pf = veb->pf;
 671         struct i40e_hw *hw = &pf->hw;
 672         struct i40e_eth_stats *oes;
 673         struct i40e_eth_stats *es;     /* device's eth stats */
 674         struct i40e_veb_tc_stats *veb_oes;
 675         struct i40e_veb_tc_stats *veb_es;
 676         int i, idx = 0;
 677
 678         idx = veb->stats_idx;
 679         es = &veb->stats;
 680         oes = &veb->stats_offsets;
 681         veb_es = &veb->tc_stats;
 682         veb_oes = &veb->tc_stats_offsets;
 683
 684         /* Gather up the stats that the hw collects */
 685         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 686                            veb->stat_offsets_loaded,
 687                            &oes->tx_discards, &es->tx_discards);
 688         if (hw->revision_id > 0)
 689                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 690                                    veb->stat_offsets_loaded,
 691                                    &oes->rx_unknown_protocol,
 692                                    &es->rx_unknown_protocol);
 693         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 694                            veb->stat_offsets_loaded,
 695                            &oes->rx_bytes, &es->rx_bytes);
 696         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 697                            veb->stat_offsets_loaded,
 698                            &oes->rx_unicast, &es->rx_unicast);
 699         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->rx_multicast, &es->rx_multicast);
 702         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->rx_broadcast, &es->rx_broadcast);
 705
 706         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 707                            veb->stat_offsets_loaded,
 708                            &oes->tx_bytes, &es->tx_bytes);
 709         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 710                            veb->stat_offsets_loaded,
 711                            &oes->tx_unicast, &es->tx_unicast);
 712         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 713                            veb->stat_offsets_loaded,
 714                            &oes->tx_multicast, &es->tx_multicast);
 715         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 716                            veb->stat_offsets_loaded,
 717                            &oes->tx_broadcast, &es->tx_broadcast);
 718         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 719                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 720                                    I40E_GLVEBTC_RPCL(i, idx),
 721                                    veb->stat_offsets_loaded,
 722                                    &veb_oes->tc_rx_packets[i],
 723                                    &veb_es->tc_rx_packets[i]);
 724                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 725                                    I40E_GLVEBTC_RBCL(i, idx),
 726                                    veb->stat_offsets_loaded,
 727                                    &veb_oes->tc_rx_bytes[i],
 728                                    &veb_es->tc_rx_bytes[i]);
 729                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 730                                    I40E_GLVEBTC_TPCL(i, idx),
 731                                    veb->stat_offsets_loaded,
 732                                    &veb_oes->tc_tx_packets[i],
 733                                    &veb_es->tc_tx_packets[i]);
 734                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 735                                    I40E_GLVEBTC_TBCL(i, idx),
 736                                    veb->stat_offsets_loaded,
 737                                    &veb_oes->tc_tx_bytes[i],
 738                                    &veb_es->tc_tx_bytes[i]);
 739         }
 740         veb->stat_offsets_loaded = true;
 741 }
 742
 743 #ifdef I40E_FCOE
 744 /**
 745  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 746  * @vsi: the VSI that is capable of doing FCoE
 747  **/
 748 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 749 {
 750         struct i40e_pf *pf = vsi->back;
 751         struct i40e_hw *hw = &pf->hw;
 752         struct i40e_fcoe_stats *ofs;
 753         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 754         int idx;
 755
 756         if (vsi->type != I40E_VSI_FCOE)
 757                 return;
 758
 759         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 760         fs = &vsi->fcoe_stats;
 761         ofs = &vsi->fcoe_stats_offsets;
 762
 763         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 764                            vsi->fcoe_stat_offsets_loaded,
 765                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 766         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 767                            vsi->fcoe_stat_offsets_loaded,
 768                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 769         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 770                            vsi->fcoe_stat_offsets_loaded,
 771                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 772         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 773                            vsi->fcoe_stat_offsets_loaded,
 774                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 775         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 776                            vsi->fcoe_stat_offsets_loaded,
 777                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 778         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 779                            vsi->fcoe_stat_offsets_loaded,
 780                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 781         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 782                            vsi->fcoe_stat_offsets_loaded,
 783                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 784         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 785                            vsi->fcoe_stat_offsets_loaded,
 786                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 787
 788         vsi->fcoe_stat_offsets_loaded = true;
 789 }
 790
 791 #endif
 792 /**
 793  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 794  * @pf: the corresponding PF
 795  *
 796  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 797  **/
 798 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 799 {
 800         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 801         struct i40e_hw_port_stats *nsd = &pf->stats;
 802         struct i40e_hw *hw = &pf->hw;
 803         u64 xoff = 0;
 804
 805         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 806             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 807                 return;
 808
 809         xoff = nsd->link_xoff_rx;
 810         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 811                            pf->stat_offsets_loaded,
 812                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 813
 814         /* No new LFC xoff rx */
 815         if (!(nsd->link_xoff_rx - xoff))
 816                 return;
 817
 818 }
 819
 820 /**
 821  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 822  * @pf: the corresponding PF
 823  *
 824  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 825  **/
 826 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 827 {
 828         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 829         struct i40e_hw_port_stats *nsd = &pf->stats;
 830         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 831         struct i40e_dcbx_config *dcb_cfg;
 832         struct i40e_hw *hw = &pf->hw;
 833         u16 i;
 834         u8 tc;
 835
 836         dcb_cfg = &hw->local_dcbx_config;
 837
 838         /* Collect Link XOFF stats when PFC is disabled */
 839         if (!dcb_cfg->pfc.pfcenable) {
 840                 i40e_update_link_xoff_rx(pf);
 841                 return;
 842         }
 843
 844         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 845                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 846                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 847                                    pf->stat_offsets_loaded,
 848                                    &osd->priority_xoff_rx[i],
 849                                    &nsd->priority_xoff_rx[i]);
 850
 851                 /* No new PFC xoff rx */
 852                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 853                         continue;
 854                 /* Get the TC for given priority */
 855                 tc = dcb_cfg->etscfg.prioritytable[i];
 856                 xoff[tc] = true;
 857         }
 858 }
 859
 860 /**
 861  * i40e_update_vsi_stats - Update the vsi statistics counters.
 862  * @vsi: the VSI to be updated
 863  *
 864  * There are a few instances where we store the same stat in a
 865  * couple of different structs.  This is partly because we have
 866  * the netdev stats that need to be filled out, which is slightly
 867  * different from the "eth_stats" defined by the chip and used in
 868  * VF communications.  We sort it out here.
 869  **/
 870 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 871 {
 872         struct i40e_pf *pf = vsi->back;
 873         struct rtnl_link_stats64 *ons;
 874         struct rtnl_link_stats64 *ns;   /* netdev stats */
 875         struct i40e_eth_stats *oes;
 876         struct i40e_eth_stats *es;     /* device's eth stats */
 877         u32 tx_restart, tx_busy;
 878         struct i40e_ring *p;
 879         u32 rx_page, rx_buf;
 880         u64 bytes, packets;
 881         unsigned int start;
 882         u64 tx_linearize;
 883         u64 rx_p, rx_b;
 884         u64 tx_p, tx_b;
 885         u16 q;
 886
 887         if (test_bit(__I40E_DOWN, &vsi->state) ||
 888             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 889                 return;
 890
 891         ns = i40e_get_vsi_stats_struct(vsi);
 892         ons = &vsi->net_stats_offsets;
 893         es = &vsi->eth_stats;
 894         oes = &vsi->eth_stats_offsets;
 895
 896         /* Gather up the netdev and vsi stats that the driver collects
 897          * on the fly during packet processing
 898          */
 899         rx_b = rx_p = 0;
 900         tx_b = tx_p = 0;
 901         tx_restart = tx_busy = tx_linearize = 0;
 902         rx_page = 0;
 903         rx_buf = 0;
 904         rcu_read_lock();
 905         for (q = 0; q < vsi->num_queue_pairs; q++) {
 906                 /* locate Tx ring */
 907                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 908
 909                 do {
 910                         start = u64_stats_fetch_begin_irq(&p->syncp);
 911                         packets = p->stats.packets;
 912                         bytes = p->stats.bytes;
 913                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 914                 tx_b += bytes;
 915                 tx_p += packets;
 916                 tx_restart += p->tx_stats.restart_queue;
 917                 tx_busy += p->tx_stats.tx_busy;
 918                 tx_linearize += p->tx_stats.tx_linearize;
 919
 920                 /* Rx queue is part of the same block as Tx queue */
 921                 p = &p[1];
 922                 do {
 923                         start = u64_stats_fetch_begin_irq(&p->syncp);
 924                         packets = p->stats.packets;
 925                         bytes = p->stats.bytes;
 926                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 927                 rx_b += bytes;
 928                 rx_p += packets;
 929                 rx_buf += p->rx_stats.alloc_buff_failed;
 930                 rx_page += p->rx_stats.alloc_page_failed;
 931         }
 932         rcu_read_unlock();
 933         vsi->tx_restart = tx_restart;
 934         vsi->tx_busy = tx_busy;
 935         vsi->tx_linearize = tx_linearize;
 936         vsi->rx_page_failed = rx_page;
 937         vsi->rx_buf_failed = rx_buf;
 938
 939         ns->rx_packets = rx_p;
 940         ns->rx_bytes = rx_b;
 941         ns->tx_packets = tx_p;
 942         ns->tx_bytes = tx_b;
 943
 944         /* update netdev stats from eth stats */
 945         i40e_update_eth_stats(vsi);
 946         ons->tx_errors = oes->tx_errors;
 947         ns->tx_errors = es->tx_errors;
 948         ons->multicast = oes->rx_multicast;
 949         ns->multicast = es->rx_multicast;
 950         ons->rx_dropped = oes->rx_discards;
 951         ns->rx_dropped = es->rx_discards;
 952         ons->tx_dropped = oes->tx_discards;
 953         ns->tx_dropped = es->tx_discards;
 954
 955         /* pull in a couple PF stats if this is the main vsi */
 956         if (vsi == pf->vsi[pf->lan_vsi]) {
 957                 ns->rx_crc_errors = pf->stats.crc_errors;
 958                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 959                 ns->rx_length_errors = pf->stats.rx_length_errors;
 960         }
 961 }
 962
 963 /**
 964  * i40e_update_pf_stats - Update the PF statistics counters.
 965  * @pf: the PF to be updated
 966  **/
 967 static void i40e_update_pf_stats(struct i40e_pf *pf)
 968 {
 969         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 970         struct i40e_hw_port_stats *nsd = &pf->stats;
 971         struct i40e_hw *hw = &pf->hw;
 972         u32 val;
 973         int i;
 974
 975         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 976                            I40E_GLPRT_GORCL(hw->port),
 977                            pf->stat_offsets_loaded,
 978                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 979         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 980                            I40E_GLPRT_GOTCL(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 983         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->eth.rx_discards,
 986                            &nsd->eth.rx_discards);
 987         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 988                            I40E_GLPRT_UPRCL(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->eth.rx_unicast,
 991                            &nsd->eth.rx_unicast);
 992         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 993                            I40E_GLPRT_MPRCL(hw->port),
 994                            pf->stat_offsets_loaded,
 995                            &osd->eth.rx_multicast,
 996                            &nsd->eth.rx_multicast);
 997         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 998                            I40E_GLPRT_BPRCL(hw->port),
 999                            pf->stat_offsets_loaded,
1000                            &osd->eth.rx_broadcast,
1001                            &nsd->eth.rx_broadcast);
1002         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1003                            I40E_GLPRT_UPTCL(hw->port),
1004                            pf->stat_offsets_loaded,
1005                            &osd->eth.tx_unicast,
1006                            &nsd->eth.tx_unicast);
1007         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1008                            I40E_GLPRT_MPTCL(hw->port),
1009                            pf->stat_offsets_loaded,
1010                            &osd->eth.tx_multicast,
1011                            &nsd->eth.tx_multicast);
1012         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1013                            I40E_GLPRT_BPTCL(hw->port),
1014                            pf->stat_offsets_loaded,
1015                            &osd->eth.tx_broadcast,
1016                            &nsd->eth.tx_broadcast);
1017
1018         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1019                            pf->stat_offsets_loaded,
1020                            &osd->tx_dropped_link_down,
1021                            &nsd->tx_dropped_link_down);
1022
1023         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1024                            pf->stat_offsets_loaded,
1025                            &osd->crc_errors, &nsd->crc_errors);
1026
1027         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->illegal_bytes, &nsd->illegal_bytes);
1030
1031         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->mac_local_faults,
1034                            &nsd->mac_local_faults);
1035         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->mac_remote_faults,
1038                            &nsd->mac_remote_faults);
1039
1040         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1041                            pf->stat_offsets_loaded,
1042                            &osd->rx_length_errors,
1043                            &nsd->rx_length_errors);
1044
1045         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->link_xon_rx, &nsd->link_xon_rx);
1048         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1049                            pf->stat_offsets_loaded,
1050                            &osd->link_xon_tx, &nsd->link_xon_tx);
1051         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1052         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1053                            pf->stat_offsets_loaded,
1054                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1055
1056         for (i = 0; i < 8; i++) {
1057                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1058                                    pf->stat_offsets_loaded,
1059                                    &osd->priority_xon_rx[i],
1060                                    &nsd->priority_xon_rx[i]);
1061                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1062                                    pf->stat_offsets_loaded,
1063                                    &osd->priority_xon_tx[i],
1064                                    &nsd->priority_xon_tx[i]);
1065                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1066                                    pf->stat_offsets_loaded,
1067                                    &osd->priority_xoff_tx[i],
1068                                    &nsd->priority_xoff_tx[i]);
1069                 i40e_stat_update32(hw,
1070                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1071                                    pf->stat_offsets_loaded,
1072                                    &osd->priority_xon_2_xoff[i],
1073                                    &nsd->priority_xon_2_xoff[i]);
1074         }
1075
1076         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1077                            I40E_GLPRT_PRC64L(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_size_64, &nsd->rx_size_64);
1080         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1081                            I40E_GLPRT_PRC127L(hw->port),
1082                            pf->stat_offsets_loaded,
1083                            &osd->rx_size_127, &nsd->rx_size_127);
1084         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1085                            I40E_GLPRT_PRC255L(hw->port),
1086                            pf->stat_offsets_loaded,
1087                            &osd->rx_size_255, &nsd->rx_size_255);
1088         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1089                            I40E_GLPRT_PRC511L(hw->port),
1090                            pf->stat_offsets_loaded,
1091                            &osd->rx_size_511, &nsd->rx_size_511);
1092         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1093                            I40E_GLPRT_PRC1023L(hw->port),
1094                            pf->stat_offsets_loaded,
1095                            &osd->rx_size_1023, &nsd->rx_size_1023);
1096         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1097                            I40E_GLPRT_PRC1522L(hw->port),
1098                            pf->stat_offsets_loaded,
1099                            &osd->rx_size_1522, &nsd->rx_size_1522);
1100         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1101                            I40E_GLPRT_PRC9522L(hw->port),
1102                            pf->stat_offsets_loaded,
1103                            &osd->rx_size_big, &nsd->rx_size_big);
1104
1105         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1106                            I40E_GLPRT_PTC64L(hw->port),
1107                            pf->stat_offsets_loaded,
1108                            &osd->tx_size_64, &nsd->tx_size_64);
1109         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1110                            I40E_GLPRT_PTC127L(hw->port),
1111                            pf->stat_offsets_loaded,
1112                            &osd->tx_size_127, &nsd->tx_size_127);
1113         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1114                            I40E_GLPRT_PTC255L(hw->port),
1115                            pf->stat_offsets_loaded,
1116                            &osd->tx_size_255, &nsd->tx_size_255);
1117         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1118                            I40E_GLPRT_PTC511L(hw->port),
1119                            pf->stat_offsets_loaded,
1120                            &osd->tx_size_511, &nsd->tx_size_511);
1121         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1122                            I40E_GLPRT_PTC1023L(hw->port),
1123                            pf->stat_offsets_loaded,
1124                            &osd->tx_size_1023, &nsd->tx_size_1023);
1125         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1126                            I40E_GLPRT_PTC1522L(hw->port),
1127                            pf->stat_offsets_loaded,
1128                            &osd->tx_size_1522, &nsd->tx_size_1522);
1129         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1130                            I40E_GLPRT_PTC9522L(hw->port),
1131                            pf->stat_offsets_loaded,
1132                            &osd->tx_size_big, &nsd->tx_size_big);
1133
1134         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1135                            pf->stat_offsets_loaded,
1136                            &osd->rx_undersize, &nsd->rx_undersize);
1137         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1138                            pf->stat_offsets_loaded,
1139                            &osd->rx_fragments, &nsd->rx_fragments);
1140         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1141                            pf->stat_offsets_loaded,
1142                            &osd->rx_oversize, &nsd->rx_oversize);
1143         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1144                            pf->stat_offsets_loaded,
1145                            &osd->rx_jabber, &nsd->rx_jabber);
1146
1147         /* FDIR stats */
1148         i40e_stat_update32(hw,
1149                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1150                            pf->stat_offsets_loaded,
1151                            &osd->fd_atr_match, &nsd->fd_atr_match);
1152         i40e_stat_update32(hw,
1153                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1154                            pf->stat_offsets_loaded,
1155                            &osd->fd_sb_match, &nsd->fd_sb_match);
1156         i40e_stat_update32(hw,
1157                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1158                       pf->stat_offsets_loaded,
1159                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1160
1161         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1162         nsd->tx_lpi_status =
1163                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1164                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1165         nsd->rx_lpi_status =
1166                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1167                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1168         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1169                            pf->stat_offsets_loaded,
1170                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1171         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1172                            pf->stat_offsets_loaded,
1173                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1174
1175         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1176             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1177                 nsd->fd_sb_status = true;
1178         else
1179                 nsd->fd_sb_status = false;
1180
1181         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1182             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1183                 nsd->fd_atr_status = true;
1184         else
1185                 nsd->fd_atr_status = false;
1186
1187         pf->stat_offsets_loaded = true;
1188 }
1189
1190 /**
1191  * i40e_update_stats - Update the various statistics counters.
1192  * @vsi: the VSI to be updated
1193  *
1194  * Update the various stats for this VSI and its related entities.
1195  **/
1196 void i40e_update_stats(struct i40e_vsi *vsi)
1197 {
1198         struct i40e_pf *pf = vsi->back;
1199
1200         if (vsi == pf->vsi[pf->lan_vsi])
1201                 i40e_update_pf_stats(pf);
1202
1203         i40e_update_vsi_stats(vsi);
1204 #ifdef I40E_FCOE
1205         i40e_update_fcoe_stats(vsi);
1206 #endif
1207 }
1208
1209 /**
1210  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1211  * @vsi: the VSI to be searched
1212  * @macaddr: the MAC address
1213  * @vlan: the vlan
1214  * @is_vf: make sure its a VF filter, else doesn't matter
1215  * @is_netdev: make sure its a netdev filter, else doesn't matter
1216  *
1217  * Returns ptr to the filter object or NULL
1218  **/
1219 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1220                                                 u8 *macaddr, s16 vlan,
1221                                                 bool is_vf, bool is_netdev)
1222 {
1223         struct i40e_mac_filter *f;
1224
1225         if (!vsi || !macaddr)
1226                 return NULL;
1227
1228         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1229                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1230                     (vlan == f->vlan)    &&
1231                     (!is_vf || f->is_vf) &&
1232                     (!is_netdev || f->is_netdev))
1233                         return f;
1234         }
1235         return NULL;
1236 }
1237
1238 /**
1239  * i40e_find_mac - Find a mac addr in the macvlan filters list
1240  * @vsi: the VSI to be searched
1241  * @macaddr: the MAC address we are searching for
1242  * @is_vf: make sure its a VF filter, else doesn't matter
1243  * @is_netdev: make sure its a netdev filter, else doesn't matter
1244  *
1245  * Returns the first filter with the provided MAC address or NULL if
1246  * MAC address was not found
1247  **/
1248 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1249                                       bool is_vf, bool is_netdev)
1250 {
1251         struct i40e_mac_filter *f;
1252
1253         if (!vsi || !macaddr)
1254                 return NULL;
1255
1256         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1257                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1258                     (!is_vf || f->is_vf) &&
1259                     (!is_netdev || f->is_netdev))
1260                         return f;
1261         }
1262         return NULL;
1263 }
1264
1265 /**
1266  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1267  * @vsi: the VSI to be searched
1268  *
1269  * Returns true if VSI is in vlan mode or false otherwise
1270  **/
1271 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1272 {
1273         struct i40e_mac_filter *f;
1274
1275         /* Only -1 for all the filters denotes not in vlan mode
1276          * so we have to go through all the list in order to make sure
1277          */
1278         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1279                 if (f->vlan >= 0 || vsi->info.pvid)
1280                         return true;
1281         }
1282
1283         return false;
1284 }
1285
1286 /**
1287  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1288  * @vsi: the VSI to be searched
1289  * @macaddr: the mac address to be filtered
1290  * @is_vf: true if it is a VF
1291  * @is_netdev: true if it is a netdev
1292  *
1293  * Goes through all the macvlan filters and adds a
1294  * macvlan filter for each unique vlan that already exists
1295  *
1296  * Returns first filter found on success, else NULL
1297  **/
1298 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1299                                              bool is_vf, bool is_netdev)
1300 {
1301         struct i40e_mac_filter *f;
1302
1303         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1304                 if (vsi->info.pvid)
1305                         f->vlan = le16_to_cpu(vsi->info.pvid);
1306                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1307                                       is_vf, is_netdev)) {
1308                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1309                                              is_vf, is_netdev))
1310                                 return NULL;
1311                 }
1312         }
1313
1314         return list_first_entry_or_null(&vsi->mac_filter_list,
1315                                         struct i40e_mac_filter, list);
1316 }
1317
1318 /**
1319  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1320  * @vsi: the PF Main VSI - inappropriate for any other VSI
1321  * @macaddr: the MAC address
1322  *
1323  * Some older firmware configurations set up a default promiscuous VLAN
1324  * filter that needs to be removed.
1325  **/
1326 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1327 {
1328         struct i40e_aqc_remove_macvlan_element_data element;
1329         struct i40e_pf *pf = vsi->back;
1330         i40e_status ret;
1331
1332         /* Only appropriate for the PF main VSI */
1333         if (vsi->type != I40E_VSI_MAIN)
1334                 return -EINVAL;
1335
1336         memset(&element, 0, sizeof(element));
1337         ether_addr_copy(element.mac_addr, macaddr);
1338         element.vlan_tag = 0;
1339         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1340                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1341         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1342         if (ret)
1343                 return -ENOENT;
1344
1345         return 0;
1346 }
1347
1348 /**
1349  * i40e_add_filter - Add a mac/vlan filter to the VSI
1350  * @vsi: the VSI to be searched
1351  * @macaddr: the MAC address
1352  * @vlan: the vlan
1353  * @is_vf: make sure its a VF filter, else doesn't matter
1354  * @is_netdev: make sure its a netdev filter, else doesn't matter
1355  *
1356  * Returns ptr to the filter object or NULL when no memory available.
1357  **/
1358 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1359                                         u8 *macaddr, s16 vlan,
1360                                         bool is_vf, bool is_netdev)
1361 {
1362         struct i40e_mac_filter *f;
1363
1364         if (!vsi || !macaddr)
1365                 return NULL;
1366
1367         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1368         if (!f) {
1369                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1370                 if (!f)
1371                         goto add_filter_out;
1372
1373                 ether_addr_copy(f->macaddr, macaddr);
1374                 f->vlan = vlan;
1375                 f->changed = true;
1376
1377                 INIT_LIST_HEAD(&f->list);
1378                 list_add(&f->list, &vsi->mac_filter_list);
1379         }
1380
1381         /* increment counter and add a new flag if needed */
1382         if (is_vf) {
1383                 if (!f->is_vf) {
1384                         f->is_vf = true;
1385                         f->counter++;
1386                 }
1387         } else if (is_netdev) {
1388                 if (!f->is_netdev) {
1389                         f->is_netdev = true;
1390                         f->counter++;
1391                 }
1392         } else {
1393                 f->counter++;
1394         }
1395
1396         /* changed tells sync_filters_subtask to
1397          * push the filter down to the firmware
1398          */
1399         if (f->changed) {
1400                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1401                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1402         }
1403
1404 add_filter_out:
1405         return f;
1406 }
1407
1408 /**
1409  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1410  * @vsi: the VSI to be searched
1411  * @macaddr: the MAC address
1412  * @vlan: the vlan
1413  * @is_vf: make sure it's a VF filter, else doesn't matter
1414  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1415  **/
1416 void i40e_del_filter(struct i40e_vsi *vsi,
1417                      u8 *macaddr, s16 vlan,
1418                      bool is_vf, bool is_netdev)
1419 {
1420         struct i40e_mac_filter *f;
1421
1422         if (!vsi || !macaddr)
1423                 return;
1424
1425         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1426         if (!f || f->counter == 0)
1427                 return;
1428
1429         if (is_vf) {
1430                 if (f->is_vf) {
1431                         f->is_vf = false;
1432                         f->counter--;
1433                 }
1434         } else if (is_netdev) {
1435                 if (f->is_netdev) {
1436                         f->is_netdev = false;
1437                         f->counter--;
1438                 }
1439         } else {
1440                 /* make sure we don't remove a filter in use by VF or netdev */
1441                 int min_f = 0;
1442                 min_f += (f->is_vf ? 1 : 0);
1443                 min_f += (f->is_netdev ? 1 : 0);
1444
1445                 if (f->counter > min_f)
1446                         f->counter--;
1447         }
1448
1449         /* counter == 0 tells sync_filters_subtask to
1450          * remove the filter from the firmware's list
1451          */
1452         if (f->counter == 0) {
1453                 f->changed = true;
1454                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1455                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1456         }
1457 }
1458
1459 /**
1460  * i40e_set_mac - NDO callback to set mac address
1461  * @netdev: network interface device structure
1462  * @p: pointer to an address structure
1463  *
1464  * Returns 0 on success, negative on failure
1465  **/
1466 #ifdef I40E_FCOE
1467 int i40e_set_mac(struct net_device *netdev, void *p)
1468 #else
1469 static int i40e_set_mac(struct net_device *netdev, void *p)
1470 #endif
1471 {
1472         struct i40e_netdev_priv *np = netdev_priv(netdev);
1473         struct i40e_vsi *vsi = np->vsi;
1474         struct i40e_pf *pf = vsi->back;
1475         struct i40e_hw *hw = &pf->hw;
1476         struct sockaddr *addr = p;
1477         struct i40e_mac_filter *f;
1478
1479         if (!is_valid_ether_addr(addr->sa_data))
1480                 return -EADDRNOTAVAIL;
1481
1482         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1483                 netdev_info(netdev, "already using mac address %pM\n",
1484                             addr->sa_data);
1485                 return 0;
1486         }
1487
1488         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1489             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1490                 return -EADDRNOTAVAIL;
1491
1492         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1493                 netdev_info(netdev, "returning to hw mac address %pM\n",
1494                             hw->mac.addr);
1495         else
1496                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1497
1498         if (vsi->type == I40E_VSI_MAIN) {
1499                 i40e_status ret;
1500                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1501                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1502                                                 addr->sa_data, NULL);
1503                 if (ret) {
1504                         netdev_info(netdev,
1505                                     "Addr change for Main VSI failed: %d\n",
1506                                     ret);
1507                         return -EADDRNOTAVAIL;
1508                 }
1509         }
1510
1511         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1512                 struct i40e_aqc_remove_macvlan_element_data element;
1513
1514                 memset(&element, 0, sizeof(element));
1515                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1516                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1517                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1518         } else {
1519                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1520                                 false, false);
1521         }
1522
1523         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1524                 struct i40e_aqc_add_macvlan_element_data element;
1525
1526                 memset(&element, 0, sizeof(element));
1527                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1528                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1529                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1530         } else {
1531                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1532                                     false, false);
1533                 if (f)
1534                         f->is_laa = true;
1535         }
1536
1537         i40e_sync_vsi_filters(vsi, false);
1538         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1539
1540         return 0;
1541 }
1542
1543 /**
1544  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1545  * @vsi: the VSI being setup
1546  * @ctxt: VSI context structure
1547  * @enabled_tc: Enabled TCs bitmap
1548  * @is_add: True if called before Add VSI
1549  *
1550  * Setup VSI queue mapping for enabled traffic classes.
1551  **/
1552 #ifdef I40E_FCOE
1553 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1554                               struct i40e_vsi_context *ctxt,
1555                               u8 enabled_tc,
1556                               bool is_add)
1557 #else
1558 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1559                                      struct i40e_vsi_context *ctxt,
1560                                      u8 enabled_tc,
1561                                      bool is_add)
1562 #endif
1563 {
1564         struct i40e_pf *pf = vsi->back;
1565         u16 sections = 0;
1566         u8 netdev_tc = 0;
1567         u16 numtc = 0;
1568         u16 qcount;
1569         u8 offset;
1570         u16 qmap;
1571         int i;
1572         u16 num_tc_qps = 0;
1573
1574         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1575         offset = 0;
1576
1577         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1578                 /* Find numtc from enabled TC bitmap */
1579                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1580                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1581                                 numtc++;
1582                 }
1583                 if (!numtc) {
1584                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1585                         numtc = 1;
1586                 }
1587         } else {
1588                 /* At least TC0 is enabled in case of non-DCB case */
1589                 numtc = 1;
1590         }
1591
1592         vsi->tc_config.numtc = numtc;
1593         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1594         /* Number of queues per enabled TC */
1595         /* In MFP case we can have a much lower count of MSIx
1596          * vectors available and so we need to lower the used
1597          * q count.
1598          */
1599         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1600                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1601         else
1602                 qcount = vsi->alloc_queue_pairs;
1603         num_tc_qps = qcount / numtc;
1604         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1605
1606         /* Setup queue offset/count for all TCs for given VSI */
1607         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1608                 /* See if the given TC is enabled for the given VSI */
1609                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1610                         /* TC is enabled */
1611                         int pow, num_qps;
1612
1613                         switch (vsi->type) {
1614                         case I40E_VSI_MAIN:
1615                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1616                                 break;
1617 #ifdef I40E_FCOE
1618                         case I40E_VSI_FCOE:
1619                                 qcount = num_tc_qps;
1620                                 break;
1621 #endif
1622                         case I40E_VSI_FDIR:
1623                         case I40E_VSI_SRIOV:
1624                         case I40E_VSI_VMDQ2:
1625                         default:
1626                                 qcount = num_tc_qps;
1627                                 WARN_ON(i != 0);
1628                                 break;
1629                         }
1630                         vsi->tc_config.tc_info[i].qoffset = offset;
1631                         vsi->tc_config.tc_info[i].qcount = qcount;
1632
1633                         /* find the next higher power-of-2 of num queue pairs */
1634                         num_qps = qcount;
1635                         pow = 0;
1636                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1637                                 pow++;
1638                                 num_qps >>= 1;
1639                         }
1640
1641                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1642                         qmap =
1643                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1644                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1645
1646                         offset += qcount;
1647                 } else {
1648                         /* TC is not enabled so set the offset to
1649                          * default queue and allocate one queue
1650                          * for the given TC.
1651                          */
1652                         vsi->tc_config.tc_info[i].qoffset = 0;
1653                         vsi->tc_config.tc_info[i].qcount = 1;
1654                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1655
1656                         qmap = 0;
1657                 }
1658                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1659         }
1660
1661         /* Set actual Tx/Rx queue pairs */
1662         vsi->num_queue_pairs = offset;
1663         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1664                 if (vsi->req_queue_pairs > 0)
1665                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1666                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1667                         vsi->num_queue_pairs = pf->num_lan_msix;
1668         }
1669
1670         /* Scheduler section valid can only be set for ADD VSI */
1671         if (is_add) {
1672                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1673
1674                 ctxt->info.up_enable_bits = enabled_tc;
1675         }
1676         if (vsi->type == I40E_VSI_SRIOV) {
1677                 ctxt->info.mapping_flags |=
1678                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1679                 for (i = 0; i < vsi->num_queue_pairs; i++)
1680                         ctxt->info.queue_mapping[i] =
1681                                                cpu_to_le16(vsi->base_queue + i);
1682         } else {
1683                 ctxt->info.mapping_flags |=
1684                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1685                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1686         }
1687         ctxt->info.valid_sections |= cpu_to_le16(sections);
1688 }
1689
1690 /**
1691  * i40e_set_rx_mode - NDO callback to set the netdev filters
1692  * @netdev: network interface device structure
1693  **/
1694 #ifdef I40E_FCOE
1695 void i40e_set_rx_mode(struct net_device *netdev)
1696 #else
1697 static void i40e_set_rx_mode(struct net_device *netdev)
1698 #endif
1699 {
1700         struct i40e_netdev_priv *np = netdev_priv(netdev);
1701         struct i40e_mac_filter *f, *ftmp;
1702         struct i40e_vsi *vsi = np->vsi;
1703         struct netdev_hw_addr *uca;
1704         struct netdev_hw_addr *mca;
1705         struct netdev_hw_addr *ha;
1706
1707         /* add addr if not already in the filter list */
1708         netdev_for_each_uc_addr(uca, netdev) {
1709                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1710                         if (i40e_is_vsi_in_vlan(vsi))
1711                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1712                                                      false, true);
1713                         else
1714                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1715                                                 false, true);
1716                 }
1717         }
1718
1719         netdev_for_each_mc_addr(mca, netdev) {
1720                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1721                         if (i40e_is_vsi_in_vlan(vsi))
1722                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1723                                                      false, true);
1724                         else
1725                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1726                                                 false, true);
1727                 }
1728         }
1729
1730         /* remove filter if not in netdev list */
1731         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1732
1733                 if (!f->is_netdev)
1734                         continue;
1735
1736                 netdev_for_each_mc_addr(mca, netdev)
1737                         if (ether_addr_equal(mca->addr, f->macaddr))
1738                                 goto bottom_of_search_loop;
1739
1740                 netdev_for_each_uc_addr(uca, netdev)
1741                         if (ether_addr_equal(uca->addr, f->macaddr))
1742                                 goto bottom_of_search_loop;
1743
1744                 for_each_dev_addr(netdev, ha)
1745                         if (ether_addr_equal(ha->addr, f->macaddr))
1746                                 goto bottom_of_search_loop;
1747
1748                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1749                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1750
1751 bottom_of_search_loop:
1752                 continue;
1753         }
1754
1755         /* check for other flag changes */
1756         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1757                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1758                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1759         }
1760 }
1761
1762 /**
1763  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1764  * @vsi: ptr to the VSI
1765  * @grab_rtnl: whether RTNL needs to be grabbed
1766  *
1767  * Push any outstanding VSI filter changes through the AdminQ.
1768  *
1769  * Returns 0 or error value
1770  **/
1771 int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
1772 {
1773         struct i40e_mac_filter *f, *ftmp;
1774         bool promisc_forced_on = false;
1775         bool add_happened = false;
1776         int filter_list_len = 0;
1777         u32 changed_flags = 0;
1778         i40e_status ret = 0;
1779         struct i40e_pf *pf;
1780         int num_add = 0;
1781         int num_del = 0;
1782         int aq_err = 0;
1783         u16 cmd_flags;
1784
1785         /* empty array typed pointers, kcalloc later */
1786         struct i40e_aqc_add_macvlan_element_data *add_list;
1787         struct i40e_aqc_remove_macvlan_element_data *del_list;
1788
1789         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1790                 usleep_range(1000, 2000);
1791         pf = vsi->back;
1792
1793         if (vsi->netdev) {
1794                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1795                 vsi->current_netdev_flags = vsi->netdev->flags;
1796         }
1797
1798         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1799                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1800
1801                 filter_list_len = pf->hw.aq.asq_buf_size /
1802                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1803                 del_list = kcalloc(filter_list_len,
1804                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1805                             GFP_KERNEL);
1806                 if (!del_list)
1807                         return -ENOMEM;
1808
1809                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1810                         if (!f->changed)
1811                                 continue;
1812
1813                         if (f->counter != 0)
1814                                 continue;
1815                         f->changed = false;
1816                         cmd_flags = 0;
1817
1818                         /* add to delete list */
1819                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1820                         del_list[num_del].vlan_tag =
1821                                 cpu_to_le16((u16)(f->vlan ==
1822                                             I40E_VLAN_ANY ? 0 : f->vlan));
1823
1824                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1825                         del_list[num_del].flags = cmd_flags;
1826                         num_del++;
1827
1828                         /* unlink from filter list */
1829                         list_del(&f->list);
1830                         kfree(f);
1831
1832                         /* flush a full buffer */
1833                         if (num_del == filter_list_len) {
1834                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1835                                                   vsi->seid, del_list, num_del,
1836                                                   NULL);
1837                                 aq_err = pf->hw.aq.asq_last_status;
1838                                 num_del = 0;
1839                                 memset(del_list, 0, sizeof(*del_list));
1840
1841                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1842                                         dev_info(&pf->pdev->dev,
1843                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1844                                                  i40e_stat_str(&pf->hw, ret),
1845                                                  i40e_aq_str(&pf->hw, aq_err));
1846                         }
1847                 }
1848                 if (num_del) {
1849                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1850                                                      del_list, num_del, NULL);
1851                         aq_err = pf->hw.aq.asq_last_status;
1852                         num_del = 0;
1853
1854                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1855                                 dev_info(&pf->pdev->dev,
1856                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1857                                          i40e_stat_str(&pf->hw, ret),
1858                                          i40e_aq_str(&pf->hw, aq_err));
1859                 }
1860
1861                 kfree(del_list);
1862                 del_list = NULL;
1863
1864                 /* do all the adds now */
1865                 filter_list_len = pf->hw.aq.asq_buf_size /
1866                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1867                 add_list = kcalloc(filter_list_len,
1868                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1869                                GFP_KERNEL);
1870                 if (!add_list)
1871                         return -ENOMEM;
1872
1873                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1874                         if (!f->changed)
1875                                 continue;
1876
1877                         if (f->counter == 0)
1878                                 continue;
1879                         f->changed = false;
1880                         add_happened = true;
1881                         cmd_flags = 0;
1882
1883                         /* add to add array */
1884                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1885                         add_list[num_add].vlan_tag =
1886                                 cpu_to_le16(
1887                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1888                         add_list[num_add].queue_number = 0;
1889
1890                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1891                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1892                         num_add++;
1893
1894                         /* flush a full buffer */
1895                         if (num_add == filter_list_len) {
1896                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1897                                                           add_list, num_add,
1898                                                           NULL);
1899                                 aq_err = pf->hw.aq.asq_last_status;
1900                                 num_add = 0;
1901
1902                                 if (ret)
1903                                         break;
1904                                 memset(add_list, 0, sizeof(*add_list));
1905                         }
1906                 }
1907                 if (num_add) {
1908                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1909                                                   add_list, num_add, NULL);
1910                         aq_err = pf->hw.aq.asq_last_status;
1911                         num_add = 0;
1912                 }
1913                 kfree(add_list);
1914                 add_list = NULL;
1915
1916                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1917                         dev_info(&pf->pdev->dev,
1918                                  "add filter failed, err %s aq_err %s\n",
1919                                  i40e_stat_str(&pf->hw, ret),
1920                                  i40e_aq_str(&pf->hw, aq_err));
1921                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1922                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1923                                       &vsi->state)) {
1924                                 promisc_forced_on = true;
1925                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1926                                         &vsi->state);
1927                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1928                         }
1929                 }
1930         }
1931
1932         /* check for changes in promiscuous modes */
1933         if (changed_flags & IFF_ALLMULTI) {
1934                 bool cur_multipromisc;
1935                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1936                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1937                                                             vsi->seid,
1938                                                             cur_multipromisc,
1939                                                             NULL);
1940                 if (ret)
1941                         dev_info(&pf->pdev->dev,
1942                                  "set multi promisc failed, err %s aq_err %s\n",
1943                                  i40e_stat_str(&pf->hw, ret),
1944                                  i40e_aq_str(&pf->hw,
1945                                              pf->hw.aq.asq_last_status));
1946         }
1947         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1948                 bool cur_promisc;
1949                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1950                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1951                                         &vsi->state));
1952                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1953                         /* set defport ON for Main VSI instead of true promisc
1954                          * this way we will get all unicast/multicast and VLAN
1955                          * promisc behavior but will not get VF or VMDq traffic
1956                          * replicated on the Main VSI.
1957                          */
1958                         if (pf->cur_promisc != cur_promisc) {
1959                                 pf->cur_promisc = cur_promisc;
1960                                 if (grab_rtnl)
1961                                         i40e_do_reset_safe(pf,
1962                                                 BIT(__I40E_PF_RESET_REQUESTED));
1963                                 else
1964                                         i40e_do_reset(pf,
1965                                                 BIT(__I40E_PF_RESET_REQUESTED));
1966                         }
1967                 } else {
1968                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1969                                                           &vsi->back->hw,
1970                                                           vsi->seid,
1971                                                           cur_promisc, NULL);
1972                         if (ret)
1973                                 dev_info(&pf->pdev->dev,
1974                                          "set unicast promisc failed, err %d, aq_err %d\n",
1975                                          ret, pf->hw.aq.asq_last_status);
1976                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1977                                                           &vsi->back->hw,
1978                                                           vsi->seid,
1979                                                           cur_promisc, NULL);
1980                         if (ret)
1981                                 dev_info(&pf->pdev->dev,
1982                                          "set multicast promisc failed, err %d, aq_err %d\n",
1983                                          ret, pf->hw.aq.asq_last_status);
1984                 }
1985                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1986                                                 vsi->seid,
1987                                                 cur_promisc, NULL);
1988                 if (ret)
1989                         dev_info(&pf->pdev->dev,
1990                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1991                                  i40e_stat_str(&pf->hw, ret),
1992                                  i40e_aq_str(&pf->hw,
1993                                              pf->hw.aq.asq_last_status));
1994         }
1995
1996         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1997         return 0;
1998 }
1999
2000 /**
2001  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2002  * @pf: board private structure
2003  **/
2004 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2005 {
2006         int v;
2007
2008         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2009                 return;
2010         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2011
2012         for (v = 0; v < pf->num_alloc_vsi; v++) {
2013                 if (pf->vsi[v] &&
2014                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2015                         i40e_sync_vsi_filters(pf->vsi[v], true);
2016         }
2017 }
2018
2019 /**
2020  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2021  * @netdev: network interface device structure
2022  * @new_mtu: new value for maximum frame size
2023  *
2024  * Returns 0 on success, negative on failure
2025  **/
2026 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2027 {
2028         struct i40e_netdev_priv *np = netdev_priv(netdev);
2029         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2030         struct i40e_vsi *vsi = np->vsi;
2031
2032         /* MTU < 68 is an error and causes problems on some kernels */
2033         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2034                 return -EINVAL;
2035
2036         netdev_info(netdev, "changing MTU from %d to %d\n",
2037                     netdev->mtu, new_mtu);
2038         netdev->mtu = new_mtu;
2039         if (netif_running(netdev))
2040                 i40e_vsi_reinit_locked(vsi);
2041
2042         return 0;
2043 }
2044
2045 /**
2046  * i40e_ioctl - Access the hwtstamp interface
2047  * @netdev: network interface device structure
2048  * @ifr: interface request data
2049  * @cmd: ioctl command
2050  **/
2051 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2052 {
2053         struct i40e_netdev_priv *np = netdev_priv(netdev);
2054         struct i40e_pf *pf = np->vsi->back;
2055
2056         switch (cmd) {
2057         case SIOCGHWTSTAMP:
2058                 return i40e_ptp_get_ts_config(pf, ifr);
2059         case SIOCSHWTSTAMP:
2060                 return i40e_ptp_set_ts_config(pf, ifr);
2061         default:
2062                 return -EOPNOTSUPP;
2063         }
2064 }
2065
2066 /**
2067  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2068  * @vsi: the vsi being adjusted
2069  **/
2070 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2071 {
2072         struct i40e_vsi_context ctxt;
2073         i40e_status ret;
2074
2075         if ((vsi->info.valid_sections &
2076              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2077             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2078                 return;  /* already enabled */
2079
2080         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2081         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2082                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2083
2084         ctxt.seid = vsi->seid;
2085         ctxt.info = vsi->info;
2086         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2087         if (ret) {
2088                 dev_info(&vsi->back->pdev->dev,
2089                          "update vlan stripping failed, err %s aq_err %s\n",
2090                          i40e_stat_str(&vsi->back->hw, ret),
2091                          i40e_aq_str(&vsi->back->hw,
2092                                      vsi->back->hw.aq.asq_last_status));
2093         }
2094 }
2095
2096 /**
2097  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2098  * @vsi: the vsi being adjusted
2099  **/
2100 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2101 {
2102         struct i40e_vsi_context ctxt;
2103         i40e_status ret;
2104
2105         if ((vsi->info.valid_sections &
2106              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2107             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2108              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2109                 return;  /* already disabled */
2110
2111         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2112         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2113                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2114
2115         ctxt.seid = vsi->seid;
2116         ctxt.info = vsi->info;
2117         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2118         if (ret) {
2119                 dev_info(&vsi->back->pdev->dev,
2120                          "update vlan stripping failed, err %s aq_err %s\n",
2121                          i40e_stat_str(&vsi->back->hw, ret),
2122                          i40e_aq_str(&vsi->back->hw,
2123                                      vsi->back->hw.aq.asq_last_status));
2124         }
2125 }
2126
2127 /**
2128  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2129  * @netdev: network interface to be adjusted
2130  * @features: netdev features to test if VLAN offload is enabled or not
2131  **/
2132 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2133 {
2134         struct i40e_netdev_priv *np = netdev_priv(netdev);
2135         struct i40e_vsi *vsi = np->vsi;
2136
2137         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2138                 i40e_vlan_stripping_enable(vsi);
2139         else
2140                 i40e_vlan_stripping_disable(vsi);
2141 }
2142
2143 /**
2144  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2145  * @vsi: the vsi being configured
2146  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2147  **/
2148 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2149 {
2150         struct i40e_mac_filter *f, *add_f;
2151         bool is_netdev, is_vf;
2152
2153         is_vf = (vsi->type == I40E_VSI_SRIOV);
2154         is_netdev = !!(vsi->netdev);
2155
2156         if (is_netdev) {
2157                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2158                                         is_vf, is_netdev);
2159                 if (!add_f) {
2160                         dev_info(&vsi->back->pdev->dev,
2161                                  "Could not add vlan filter %d for %pM\n",
2162                                  vid, vsi->netdev->dev_addr);
2163                         return -ENOMEM;
2164                 }
2165         }
2166
2167         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2168                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2169                 if (!add_f) {
2170                         dev_info(&vsi->back->pdev->dev,
2171                                  "Could not add vlan filter %d for %pM\n",
2172                                  vid, f->macaddr);
2173                         return -ENOMEM;
2174                 }
2175         }
2176
2177         /* Now if we add a vlan tag, make sure to check if it is the first
2178          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2179          * with 0, so we now accept untagged and specified tagged traffic
2180          * (and not any taged and untagged)
2181          */
2182         if (vid > 0) {
2183                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2184                                                   I40E_VLAN_ANY,
2185                                                   is_vf, is_netdev)) {
2186                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2187                                         I40E_VLAN_ANY, is_vf, is_netdev);
2188                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2189                                                 is_vf, is_netdev);
2190                         if (!add_f) {
2191                                 dev_info(&vsi->back->pdev->dev,
2192                                          "Could not add filter 0 for %pM\n",
2193                                          vsi->netdev->dev_addr);
2194                                 return -ENOMEM;
2195                         }
2196                 }
2197         }
2198
2199         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2200         if (vid > 0 && !vsi->info.pvid) {
2201                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2202                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2203                                              is_vf, is_netdev)) {
2204                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2205                                                 is_vf, is_netdev);
2206                                 add_f = i40e_add_filter(vsi, f->macaddr,
2207                                                         0, is_vf, is_netdev);
2208                                 if (!add_f) {
2209                                         dev_info(&vsi->back->pdev->dev,
2210                                                  "Could not add filter 0 for %pM\n",
2211                                                  f->macaddr);
2212                                         return -ENOMEM;
2213                                 }
2214                         }
2215                 }
2216         }
2217
2218         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2219             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2220                 return 0;
2221
2222         return i40e_sync_vsi_filters(vsi, false);
2223 }
2224
2225 /**
2226  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2227  * @vsi: the vsi being configured
2228  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2229  *
2230  * Return: 0 on success or negative otherwise
2231  **/
2232 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2233 {
2234         struct net_device *netdev = vsi->netdev;
2235         struct i40e_mac_filter *f, *add_f;
2236         bool is_vf, is_netdev;
2237         int filter_count = 0;
2238
2239         is_vf = (vsi->type == I40E_VSI_SRIOV);
2240         is_netdev = !!(netdev);
2241
2242         if (is_netdev)
2243                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2244
2245         list_for_each_entry(f, &vsi->mac_filter_list, list)
2246                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2247
2248         /* go through all the filters for this VSI and if there is only
2249          * vid == 0 it means there are no other filters, so vid 0 must
2250          * be replaced with -1. This signifies that we should from now
2251          * on accept any traffic (with any tag present, or untagged)
2252          */
2253         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2254                 if (is_netdev) {
2255                         if (f->vlan &&
2256                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2257                                 filter_count++;
2258                 }
2259
2260                 if (f->vlan)
2261                         filter_count++;
2262         }
2263
2264         if (!filter_count && is_netdev) {
2265                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2266                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2267                                     is_vf, is_netdev);
2268                 if (!f) {
2269                         dev_info(&vsi->back->pdev->dev,
2270                                  "Could not add filter %d for %pM\n",
2271                                  I40E_VLAN_ANY, netdev->dev_addr);
2272                         return -ENOMEM;
2273                 }
2274         }
2275
2276         if (!filter_count) {
2277                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2278                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2279                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2280                                             is_vf, is_netdev);
2281                         if (!add_f) {
2282                                 dev_info(&vsi->back->pdev->dev,
2283                                          "Could not add filter %d for %pM\n",
2284                                          I40E_VLAN_ANY, f->macaddr);
2285                                 return -ENOMEM;
2286                         }
2287                 }
2288         }
2289
2290         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2291             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2292                 return 0;
2293
2294         return i40e_sync_vsi_filters(vsi, false);
2295 }
2296
2297 /**
2298  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2299  * @netdev: network interface to be adjusted
2300  * @vid: vlan id to be added
2301  *
2302  * net_device_ops implementation for adding vlan ids
2303  **/
2304 #ifdef I40E_FCOE
2305 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2306                          __always_unused __be16 proto, u16 vid)
2307 #else
2308 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2309                                 __always_unused __be16 proto, u16 vid)
2310 #endif
2311 {
2312         struct i40e_netdev_priv *np = netdev_priv(netdev);
2313         struct i40e_vsi *vsi = np->vsi;
2314         int ret = 0;
2315
2316         if (vid > 4095)
2317                 return -EINVAL;
2318
2319         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2320
2321         /* If the network stack called us with vid = 0 then
2322          * it is asking to receive priority tagged packets with
2323          * vlan id 0.  Our HW receives them by default when configured
2324          * to receive untagged packets so there is no need to add an
2325          * extra filter for vlan 0 tagged packets.
2326          */
2327         if (vid)
2328                 ret = i40e_vsi_add_vlan(vsi, vid);
2329
2330         if (!ret && (vid < VLAN_N_VID))
2331                 set_bit(vid, vsi->active_vlans);
2332
2333         return ret;
2334 }
2335
2336 /**
2337  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2338  * @netdev: network interface to be adjusted
2339  * @vid: vlan id to be removed
2340  *
2341  * net_device_ops implementation for removing vlan ids
2342  **/
2343 #ifdef I40E_FCOE
2344 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2345                           __always_unused __be16 proto, u16 vid)
2346 #else
2347 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2348                                  __always_unused __be16 proto, u16 vid)
2349 #endif
2350 {
2351         struct i40e_netdev_priv *np = netdev_priv(netdev);
2352         struct i40e_vsi *vsi = np->vsi;
2353
2354         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2355
2356         /* return code is ignored as there is nothing a user
2357          * can do about failure to remove and a log message was
2358          * already printed from the other function
2359          */
2360         i40e_vsi_kill_vlan(vsi, vid);
2361
2362         clear_bit(vid, vsi->active_vlans);
2363
2364         return 0;
2365 }
2366
2367 /**
2368  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2369  * @vsi: the vsi being brought back up
2370  **/
2371 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2372 {
2373         u16 vid;
2374
2375         if (!vsi->netdev)
2376                 return;
2377
2378         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2379
2380         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2381                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2382                                      vid);
2383 }
2384
2385 /**
2386  * i40e_vsi_add_pvid - Add pvid for the VSI
2387  * @vsi: the vsi being adjusted
2388  * @vid: the vlan id to set as a PVID
2389  **/
2390 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2391 {
2392         struct i40e_vsi_context ctxt;
2393         i40e_status ret;
2394
2395         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2396         vsi->info.pvid = cpu_to_le16(vid);
2397         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2398                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2399                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2400
2401         ctxt.seid = vsi->seid;
2402         ctxt.info = vsi->info;
2403         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2404         if (ret) {
2405                 dev_info(&vsi->back->pdev->dev,
2406                          "add pvid failed, err %s aq_err %s\n",
2407                          i40e_stat_str(&vsi->back->hw, ret),
2408                          i40e_aq_str(&vsi->back->hw,
2409                                      vsi->back->hw.aq.asq_last_status));
2410                 return -ENOENT;
2411         }
2412
2413         return 0;
2414 }
2415
2416 /**
2417  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2418  * @vsi: the vsi being adjusted
2419  *
2420  * Just use the vlan_rx_register() service to put it back to normal
2421  **/
2422 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2423 {
2424         i40e_vlan_stripping_disable(vsi);
2425
2426         vsi->info.pvid = 0;
2427 }
2428
2429 /**
2430  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2431  * @vsi: ptr to the VSI
2432  *
2433  * If this function returns with an error, then it's possible one or
2434  * more of the rings is populated (while the rest are not).  It is the
2435  * callers duty to clean those orphaned rings.
2436  *
2437  * Return 0 on success, negative on failure
2438  **/
2439 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2440 {
2441         int i, err = 0;
2442
2443         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2444                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2445
2446         return err;
2447 }
2448
2449 /**
2450  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2451  * @vsi: ptr to the VSI
2452  *
2453  * Free VSI's transmit software resources
2454  **/
2455 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2456 {
2457         int i;
2458
2459         if (!vsi->tx_rings)
2460                 return;
2461
2462         for (i = 0; i < vsi->num_queue_pairs; i++)
2463                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2464                         i40e_free_tx_resources(vsi->tx_rings[i]);
2465 }
2466
2467 /**
2468  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2469  * @vsi: ptr to the VSI
2470  *
2471  * If this function returns with an error, then it's possible one or
2472  * more of the rings is populated (while the rest are not).  It is the
2473  * callers duty to clean those orphaned rings.
2474  *
2475  * Return 0 on success, negative on failure
2476  **/
2477 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2478 {
2479         int i, err = 0;
2480
2481         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2482                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2483 #ifdef I40E_FCOE
2484         i40e_fcoe_setup_ddp_resources(vsi);
2485 #endif
2486         return err;
2487 }
2488
2489 /**
2490  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2491  * @vsi: ptr to the VSI
2492  *
2493  * Free all receive software resources
2494  **/
2495 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2496 {
2497         int i;
2498
2499         if (!vsi->rx_rings)
2500                 return;
2501
2502         for (i = 0; i < vsi->num_queue_pairs; i++)
2503                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2504                         i40e_free_rx_resources(vsi->rx_rings[i]);
2505 #ifdef I40E_FCOE
2506         i40e_fcoe_free_ddp_resources(vsi);
2507 #endif
2508 }
2509
2510 /**
2511  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2512  * @ring: The Tx ring to configure
2513  *
2514  * This enables/disables XPS for a given Tx descriptor ring
2515  * based on the TCs enabled for the VSI that ring belongs to.
2516  **/
2517 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2518 {
2519         struct i40e_vsi *vsi = ring->vsi;
2520         cpumask_var_t mask;
2521
2522         if (!ring->q_vector || !ring->netdev)
2523                 return;
2524
2525         /* Single TC mode enable XPS */
2526         if (vsi->tc_config.numtc <= 1) {
2527                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2528                         netif_set_xps_queue(ring->netdev,
2529                                             &ring->q_vector->affinity_mask,
2530                                             ring->queue_index);
2531         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2532                 /* Disable XPS to allow selection based on TC */
2533                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2534                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2535                 free_cpumask_var(mask);
2536         }
2537 }
2538
2539 /**
2540  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2541  * @ring: The Tx ring to configure
2542  *
2543  * Configure the Tx descriptor ring in the HMC context.
2544  **/
2545 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2546 {
2547         struct i40e_vsi *vsi = ring->vsi;
2548         u16 pf_q = vsi->base_queue + ring->queue_index;
2549         struct i40e_hw *hw = &vsi->back->hw;
2550         struct i40e_hmc_obj_txq tx_ctx;
2551         i40e_status err = 0;
2552         u32 qtx_ctl = 0;
2553
2554         /* some ATR related tx ring init */
2555         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2556                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2557                 ring->atr_count = 0;
2558         } else {
2559                 ring->atr_sample_rate = 0;
2560         }
2561
2562         /* configure XPS */
2563         i40e_config_xps_tx_ring(ring);
2564
2565         /* clear the context structure first */
2566         memset(&tx_ctx, 0, sizeof(tx_ctx));
2567
2568         tx_ctx.new_context = 1;
2569         tx_ctx.base = (ring->dma / 128);
2570         tx_ctx.qlen = ring->count;
2571         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2572                                                I40E_FLAG_FD_ATR_ENABLED));
2573 #ifdef I40E_FCOE
2574         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2575 #endif
2576         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2577         /* FDIR VSI tx ring can still use RS bit and writebacks */
2578         if (vsi->type != I40E_VSI_FDIR)
2579                 tx_ctx.head_wb_ena = 1;
2580         tx_ctx.head_wb_addr = ring->dma +
2581                               (ring->count * sizeof(struct i40e_tx_desc));
2582
2583         /* As part of VSI creation/update, FW allocates certain
2584          * Tx arbitration queue sets for each TC enabled for
2585          * the VSI. The FW returns the handles to these queue
2586          * sets as part of the response buffer to Add VSI,
2587          * Update VSI, etc. AQ commands. It is expected that
2588          * these queue set handles be associated with the Tx
2589          * queues by the driver as part of the TX queue context
2590          * initialization. This has to be done regardless of
2591          * DCB as by default everything is mapped to TC0.
2592          */
2593         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2594         tx_ctx.rdylist_act = 0;
2595
2596         /* clear the context in the HMC */
2597         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2598         if (err) {
2599                 dev_info(&vsi->back->pdev->dev,
2600                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2601                          ring->queue_index, pf_q, err);
2602                 return -ENOMEM;
2603         }
2604
2605         /* set the context in the HMC */
2606         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2607         if (err) {
2608                 dev_info(&vsi->back->pdev->dev,
2609                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2610                          ring->queue_index, pf_q, err);
2611                 return -ENOMEM;
2612         }
2613
2614         /* Now associate this queue with this PCI function */
2615         if (vsi->type == I40E_VSI_VMDQ2) {
2616                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2617                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2618                            I40E_QTX_CTL_VFVM_INDX_MASK;
2619         } else {
2620                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2621         }
2622
2623         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2624                     I40E_QTX_CTL_PF_INDX_MASK);
2625         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2626         i40e_flush(hw);
2627
2628         /* cache tail off for easier writes later */
2629         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2630
2631         return 0;
2632 }
2633
2634 /**
2635  * i40e_configure_rx_ring - Configure a receive ring context
2636  * @ring: The Rx ring to configure
2637  *
2638  * Configure the Rx descriptor ring in the HMC context.
2639  **/
2640 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2641 {
2642         struct i40e_vsi *vsi = ring->vsi;
2643         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2644         u16 pf_q = vsi->base_queue + ring->queue_index;
2645         struct i40e_hw *hw = &vsi->back->hw;
2646         struct i40e_hmc_obj_rxq rx_ctx;
2647         i40e_status err = 0;
2648
2649         ring->state = 0;
2650
2651         /* clear the context structure first */
2652         memset(&rx_ctx, 0, sizeof(rx_ctx));
2653
2654         ring->rx_buf_len = vsi->rx_buf_len;
2655         ring->rx_hdr_len = vsi->rx_hdr_len;
2656
2657         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2658         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2659
2660         rx_ctx.base = (ring->dma / 128);
2661         rx_ctx.qlen = ring->count;
2662
2663         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2664                 set_ring_16byte_desc_enabled(ring);
2665                 rx_ctx.dsize = 0;
2666         } else {
2667                 rx_ctx.dsize = 1;
2668         }
2669
2670         rx_ctx.dtype = vsi->dtype;
2671         if (vsi->dtype) {
2672                 set_ring_ps_enabled(ring);
2673                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2674                                   I40E_RX_SPLIT_IP      |
2675                                   I40E_RX_SPLIT_TCP_UDP |
2676                                   I40E_RX_SPLIT_SCTP;
2677         } else {
2678                 rx_ctx.hsplit_0 = 0;
2679         }
2680
2681         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2682                                   (chain_len * ring->rx_buf_len));
2683         if (hw->revision_id == 0)
2684                 rx_ctx.lrxqthresh = 0;
2685         else
2686                 rx_ctx.lrxqthresh = 2;
2687         rx_ctx.crcstrip = 1;
2688         rx_ctx.l2tsel = 1;
2689         /* this controls whether VLAN is stripped from inner headers */
2690         rx_ctx.showiv = 0;
2691 #ifdef I40E_FCOE
2692         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2693 #endif
2694         /* set the prefena field to 1 because the manual says to */
2695         rx_ctx.prefena = 1;
2696
2697         /* clear the context in the HMC */
2698         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2699         if (err) {
2700                 dev_info(&vsi->back->pdev->dev,
2701                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2702                          ring->queue_index, pf_q, err);
2703                 return -ENOMEM;
2704         }
2705
2706         /* set the context in the HMC */
2707         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2708         if (err) {
2709                 dev_info(&vsi->back->pdev->dev,
2710                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2711                          ring->queue_index, pf_q, err);
2712                 return -ENOMEM;
2713         }
2714
2715         /* cache tail for quicker writes, and clear the reg before use */
2716         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2717         writel(0, ring->tail);
2718
2719         if (ring_is_ps_enabled(ring)) {
2720                 i40e_alloc_rx_headers(ring);
2721                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2722         } else {
2723                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2724         }
2725
2726         return 0;
2727 }
2728
2729 /**
2730  * i40e_vsi_configure_tx - Configure the VSI for Tx
2731  * @vsi: VSI structure describing this set of rings and resources
2732  *
2733  * Configure the Tx VSI for operation.
2734  **/
2735 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2736 {
2737         int err = 0;
2738         u16 i;
2739
2740         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2741                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2742
2743         return err;
2744 }
2745
2746 /**
2747  * i40e_vsi_configure_rx - Configure the VSI for Rx
2748  * @vsi: the VSI being configured
2749  *
2750  * Configure the Rx VSI for operation.
2751  **/
2752 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2753 {
2754         int err = 0;
2755         u16 i;
2756
2757         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2758                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2759                                + ETH_FCS_LEN + VLAN_HLEN;
2760         else
2761                 vsi->max_frame = I40E_RXBUFFER_2048;
2762
2763         /* figure out correct receive buffer length */
2764         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2765                                     I40E_FLAG_RX_PS_ENABLED)) {
2766         case I40E_FLAG_RX_1BUF_ENABLED:
2767                 vsi->rx_hdr_len = 0;
2768                 vsi->rx_buf_len = vsi->max_frame;
2769                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2770                 break;
2771         case I40E_FLAG_RX_PS_ENABLED:
2772                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2773                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2774                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2775                 break;
2776         default:
2777                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2778                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2779                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2780                 break;
2781         }
2782
2783 #ifdef I40E_FCOE
2784         /* setup rx buffer for FCoE */
2785         if ((vsi->type == I40E_VSI_FCOE) &&
2786             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2787                 vsi->rx_hdr_len = 0;
2788                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2789                 vsi->max_frame = I40E_RXBUFFER_3072;
2790                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2791         }
2792
2793 #endif /* I40E_FCOE */
2794         /* round up for the chip's needs */
2795         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2796                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2797         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2798                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2799
2800         /* set up individual rings */
2801         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2802                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2803
2804         return err;
2805 }
2806
2807 /**
2808  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2809  * @vsi: ptr to the VSI
2810  **/
2811 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2812 {
2813         struct i40e_ring *tx_ring, *rx_ring;
2814         u16 qoffset, qcount;
2815         int i, n;
2816
2817         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2818                 /* Reset the TC information */
2819                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2820                         rx_ring = vsi->rx_rings[i];
2821                         tx_ring = vsi->tx_rings[i];
2822                         rx_ring->dcb_tc = 0;
2823                         tx_ring->dcb_tc = 0;
2824                 }
2825         }
2826
2827         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2828                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2829                         continue;
2830
2831                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2832                 qcount = vsi->tc_config.tc_info[n].qcount;
2833                 for (i = qoffset; i < (qoffset + qcount); i++) {
2834                         rx_ring = vsi->rx_rings[i];
2835                         tx_ring = vsi->tx_rings[i];
2836                         rx_ring->dcb_tc = n;
2837                         tx_ring->dcb_tc = n;
2838                 }
2839         }
2840 }
2841
2842 /**
2843  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2844  * @vsi: ptr to the VSI
2845  **/
2846 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2847 {
2848         if (vsi->netdev)
2849                 i40e_set_rx_mode(vsi->netdev);
2850 }
2851
2852 /**
2853  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2854  * @vsi: Pointer to the targeted VSI
2855  *
2856  * This function replays the hlist on the hw where all the SB Flow Director
2857  * filters were saved.
2858  **/
2859 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2860 {
2861         struct i40e_fdir_filter *filter;
2862         struct i40e_pf *pf = vsi->back;
2863         struct hlist_node *node;
2864
2865         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2866                 return;
2867
2868         hlist_for_each_entry_safe(filter, node,
2869                                   &pf->fdir_filter_list, fdir_node) {
2870                 i40e_add_del_fdir(vsi, filter, true);
2871         }
2872 }
2873
2874 /**
2875  * i40e_vsi_configure - Set up the VSI for action
2876  * @vsi: the VSI being configured
2877  **/
2878 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2879 {
2880         int err;
2881
2882         i40e_set_vsi_rx_mode(vsi);
2883         i40e_restore_vlan(vsi);
2884         i40e_vsi_config_dcb_rings(vsi);
2885         err = i40e_vsi_configure_tx(vsi);
2886         if (!err)
2887                 err = i40e_vsi_configure_rx(vsi);
2888
2889         return err;
2890 }
2891
2892 /**
2893  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2894  * @vsi: the VSI being configured
2895  **/
2896 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2897 {
2898         struct i40e_pf *pf = vsi->back;
2899         struct i40e_q_vector *q_vector;
2900         struct i40e_hw *hw = &pf->hw;
2901         u16 vector;
2902         int i, q;
2903         u32 val;
2904         u32 qp;
2905
2906         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2907          * and PFINT_LNKLSTn registers, e.g.:
2908          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2909          */
2910         qp = vsi->base_queue;
2911         vector = vsi->base_vector;
2912         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2913                 q_vector = vsi->q_vectors[i];
2914                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2915                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2916                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2917                      q_vector->rx.itr);
2918                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2919                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2920                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2921                      q_vector->tx.itr);
2922
2923                 /* Linked list for the queuepairs assigned to this vector */
2924                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2925                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2926                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2927                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2928                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2929                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2930                               (I40E_QUEUE_TYPE_TX
2931                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2932
2933                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2934
2935                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2936                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2937                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2938                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2939                               (I40E_QUEUE_TYPE_RX
2940                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2941
2942                         /* Terminate the linked list */
2943                         if (q == (q_vector->num_ringpairs - 1))
2944                                 val |= (I40E_QUEUE_END_OF_LIST
2945                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2946
2947                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2948                         qp++;
2949                 }
2950         }
2951
2952         i40e_flush(hw);
2953 }
2954
2955 /**
2956  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2957  * @hw: ptr to the hardware info
2958  **/
2959 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2960 {
2961         struct i40e_hw *hw = &pf->hw;
2962         u32 val;
2963
2964         /* clear things first */
2965         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2966         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2967
2968         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2969               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2970               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2971               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2972               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2973               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2974               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2975               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2976
2977         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2978                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2979
2980         if (pf->flags & I40E_FLAG_PTP)
2981                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2982
2983         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2984
2985         /* SW_ITR_IDX = 0, but don't change INTENA */
2986         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2987                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2988
2989         /* OTHER_ITR_IDX = 0 */
2990         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2991 }
2992
2993 /**
2994  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2995  * @vsi: the VSI being configured
2996  **/
2997 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2998 {
2999         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3000         struct i40e_pf *pf = vsi->back;
3001         struct i40e_hw *hw = &pf->hw;
3002         u32 val;
3003
3004         /* set the ITR configuration */
3005         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3006         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3007         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3008         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3009         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3010         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3011
3012         i40e_enable_misc_int_causes(pf);
3013
3014         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3015         wr32(hw, I40E_PFINT_LNKLST0, 0);
3016
3017         /* Associate the queue pair to the vector and enable the queue int */
3018         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3019               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3020               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3021
3022         wr32(hw, I40E_QINT_RQCTL(0), val);
3023
3024         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3025               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3026               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3027
3028         wr32(hw, I40E_QINT_TQCTL(0), val);
3029         i40e_flush(hw);
3030 }
3031
3032 /**
3033  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3034  * @pf: board private structure
3035  **/
3036 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3037 {
3038         struct i40e_hw *hw = &pf->hw;
3039
3040         wr32(hw, I40E_PFINT_DYN_CTL0,
3041              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3042         i40e_flush(hw);
3043 }
3044
3045 /**
3046  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3047  * @pf: board private structure
3048  **/
3049 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3050 {
3051         struct i40e_hw *hw = &pf->hw;
3052         u32 val;
3053
3054         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3055               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3056               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3057
3058         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3059         i40e_flush(hw);
3060 }
3061
3062 /**
3063  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3064  * @vsi: pointer to a vsi
3065  * @vector: enable a particular Hw Interrupt vector, without base_vector
3066  **/
3067 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3068 {
3069         struct i40e_pf *pf = vsi->back;
3070         struct i40e_hw *hw = &pf->hw;
3071         u32 val;
3072
3073         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3074               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3075               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3076         wr32(hw, I40E_PFINT_DYN_CTLN(vector + vsi->base_vector - 1), val);
3077         /* skip the flush */
3078 }
3079
3080 /**
3081  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3082  * @vsi: pointer to a vsi
3083  * @vector: disable a particular Hw Interrupt vector
3084  **/
3085 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3086 {
3087         struct i40e_pf *pf = vsi->back;
3088         struct i40e_hw *hw = &pf->hw;
3089         u32 val;
3090
3091         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3092         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3093         i40e_flush(hw);
3094 }
3095
3096 /**
3097  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3098  * @irq: interrupt number
3099  * @data: pointer to a q_vector
3100  **/
3101 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3102 {
3103         struct i40e_q_vector *q_vector = data;
3104
3105         if (!q_vector->tx.ring && !q_vector->rx.ring)
3106                 return IRQ_HANDLED;
3107
3108         napi_schedule(&q_vector->napi);
3109
3110         return IRQ_HANDLED;
3111 }
3112
3113 /**
3114  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3115  * @vsi: the VSI being configured
3116  * @basename: name for the vector
3117  *
3118  * Allocates MSI-X vectors and requests interrupts from the kernel.
3119  **/
3120 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3121 {
3122         int q_vectors = vsi->num_q_vectors;
3123         struct i40e_pf *pf = vsi->back;
3124         int base = vsi->base_vector;
3125         int rx_int_idx = 0;
3126         int tx_int_idx = 0;
3127         int vector, err;
3128
3129         for (vector = 0; vector < q_vectors; vector++) {
3130                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3131
3132                 if (q_vector->tx.ring && q_vector->rx.ring) {
3133                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3134                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3135                         tx_int_idx++;
3136                 } else if (q_vector->rx.ring) {
3137                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3138                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3139                 } else if (q_vector->tx.ring) {
3140                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3141                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3142                 } else {
3143                         /* skip this unused q_vector */
3144                         continue;
3145                 }
3146                 err = request_irq(pf->msix_entries[base + vector].vector,
3147                                   vsi->irq_handler,
3148                                   0,
3149                                   q_vector->name,
3150                                   q_vector);
3151                 if (err) {
3152                         dev_info(&pf->pdev->dev,
3153                                  "MSIX request_irq failed, error: %d\n", err);
3154                         goto free_queue_irqs;
3155                 }
3156                 /* assign the mask for this irq */
3157                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3158                                       &q_vector->affinity_mask);
3159         }
3160
3161         vsi->irqs_ready = true;
3162         return 0;
3163
3164 free_queue_irqs:
3165         while (vector) {
3166                 vector--;
3167                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3168                                       NULL);
3169                 free_irq(pf->msix_entries[base + vector].vector,
3170                          &(vsi->q_vectors[vector]));
3171         }
3172         return err;
3173 }
3174
3175 /**
3176  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3177  * @vsi: the VSI being un-configured
3178  **/
3179 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3180 {
3181         struct i40e_pf *pf = vsi->back;
3182         struct i40e_hw *hw = &pf->hw;
3183         int base = vsi->base_vector;
3184         int i;
3185
3186         for (i = 0; i < vsi->num_queue_pairs; i++) {
3187                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3188                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3189         }
3190
3191         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3192                 for (i = vsi->base_vector;
3193                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3194                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3195
3196                 i40e_flush(hw);
3197                 for (i = 0; i < vsi->num_q_vectors; i++)
3198                         synchronize_irq(pf->msix_entries[i + base].vector);
3199         } else {
3200                 /* Legacy and MSI mode - this stops all interrupt handling */
3201                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3202                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3203                 i40e_flush(hw);
3204                 synchronize_irq(pf->pdev->irq);
3205         }
3206 }
3207
3208 /**
3209  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3210  * @vsi: the VSI being configured
3211  **/
3212 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3213 {
3214         struct i40e_pf *pf = vsi->back;
3215         int i;
3216
3217         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3218                 for (i = 0; i < vsi->num_q_vectors; i++)
3219                         i40e_irq_dynamic_enable(vsi, i);
3220         } else {
3221                 i40e_irq_dynamic_enable_icr0(pf);
3222         }
3223
3224         i40e_flush(&pf->hw);
3225         return 0;
3226 }
3227
3228 /**
3229  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3230  * @pf: board private structure
3231  **/
3232 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3233 {
3234         /* Disable ICR 0 */
3235         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3236         i40e_flush(&pf->hw);
3237 }
3238
3239 /**
3240  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3241  * @irq: interrupt number
3242  * @data: pointer to a q_vector
3243  *
3244  * This is the handler used for all MSI/Legacy interrupts, and deals
3245  * with both queue and non-queue interrupts.  This is also used in
3246  * MSIX mode to handle the non-queue interrupts.
3247  **/
3248 static irqreturn_t i40e_intr(int irq, void *data)
3249 {
3250         struct i40e_pf *pf = (struct i40e_pf *)data;
3251         struct i40e_hw *hw = &pf->hw;
3252         irqreturn_t ret = IRQ_NONE;
3253         u32 icr0, icr0_remaining;
3254         u32 val, ena_mask;
3255
3256         icr0 = rd32(hw, I40E_PFINT_ICR0);
3257         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3258
3259         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3260         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3261                 goto enable_intr;
3262
3263         /* if interrupt but no bits showing, must be SWINT */
3264         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3265             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3266                 pf->sw_int_count++;
3267
3268         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3269             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3270                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3271                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3272                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3273         }
3274
3275         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3276         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3277
3278                 /* temporarily disable queue cause for NAPI processing */
3279                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3280                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3281                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3282
3283                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3284                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3285                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3286
3287                 if (!test_bit(__I40E_DOWN, &pf->state))
3288                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3289         }
3290
3291         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3292                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3293                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3294         }
3295
3296         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3297                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3298                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3299         }
3300
3301         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3302                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3303                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3304         }
3305
3306         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3307                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3308                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3309                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3310                 val = rd32(hw, I40E_GLGEN_RSTAT);
3311                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3312                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3313                 if (val == I40E_RESET_CORER) {
3314                         pf->corer_count++;
3315                 } else if (val == I40E_RESET_GLOBR) {
3316                         pf->globr_count++;
3317                 } else if (val == I40E_RESET_EMPR) {
3318                         pf->empr_count++;
3319                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3320                 }
3321         }
3322
3323         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3324                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3325                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3326                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3327                          rd32(hw, I40E_PFHMC_ERRORINFO),
3328                          rd32(hw, I40E_PFHMC_ERRORDATA));
3329         }
3330
3331         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3332                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3333
3334                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3335                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3336                         i40e_ptp_tx_hwtstamp(pf);
3337                 }
3338         }
3339
3340         /* If a critical error is pending we have no choice but to reset the
3341          * device.
3342          * Report and mask out any remaining unexpected interrupts.
3343          */
3344         icr0_remaining = icr0 & ena_mask;
3345         if (icr0_remaining) {
3346                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3347                          icr0_remaining);
3348                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3349                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3350                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3351                         dev_info(&pf->pdev->dev, "device will be reset\n");
3352                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3353                         i40e_service_event_schedule(pf);
3354                 }
3355                 ena_mask &= ~icr0_remaining;
3356         }
3357         ret = IRQ_HANDLED;
3358
3359 enable_intr:
3360         /* re-enable interrupt causes */
3361         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3362         if (!test_bit(__I40E_DOWN, &pf->state)) {
3363                 i40e_service_event_schedule(pf);
3364                 i40e_irq_dynamic_enable_icr0(pf);
3365         }
3366
3367         return ret;
3368 }
3369
3370 /**
3371  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3372  * @tx_ring:  tx ring to clean
3373  * @budget:   how many cleans we're allowed
3374  *
3375  * Returns true if there's any budget left (e.g. the clean is finished)
3376  **/
3377 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3378 {
3379         struct i40e_vsi *vsi = tx_ring->vsi;
3380         u16 i = tx_ring->next_to_clean;
3381         struct i40e_tx_buffer *tx_buf;
3382         struct i40e_tx_desc *tx_desc;
3383
3384         tx_buf = &tx_ring->tx_bi[i];
3385         tx_desc = I40E_TX_DESC(tx_ring, i);
3386         i -= tx_ring->count;
3387
3388         do {
3389                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3390
3391                 /* if next_to_watch is not set then there is no work pending */
3392                 if (!eop_desc)
3393                         break;
3394
3395                 /* prevent any other reads prior to eop_desc */
3396                 read_barrier_depends();
3397
3398                 /* if the descriptor isn't done, no work yet to do */
3399                 if (!(eop_desc->cmd_type_offset_bsz &
3400                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3401                         break;
3402
3403                 /* clear next_to_watch to prevent false hangs */
3404                 tx_buf->next_to_watch = NULL;
3405
3406                 tx_desc->buffer_addr = 0;
3407                 tx_desc->cmd_type_offset_bsz = 0;
3408                 /* move past filter desc */
3409                 tx_buf++;
3410                 tx_desc++;
3411                 i++;
3412                 if (unlikely(!i)) {
3413                         i -= tx_ring->count;
3414                         tx_buf = tx_ring->tx_bi;
3415                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3416                 }
3417                 /* unmap skb header data */
3418                 dma_unmap_single(tx_ring->dev,
3419                                  dma_unmap_addr(tx_buf, dma),
3420                                  dma_unmap_len(tx_buf, len),
3421                                  DMA_TO_DEVICE);
3422                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3423                         kfree(tx_buf->raw_buf);
3424
3425                 tx_buf->raw_buf = NULL;
3426                 tx_buf->tx_flags = 0;
3427                 tx_buf->next_to_watch = NULL;
3428                 dma_unmap_len_set(tx_buf, len, 0);
3429                 tx_desc->buffer_addr = 0;
3430                 tx_desc->cmd_type_offset_bsz = 0;
3431
3432                 /* move us past the eop_desc for start of next FD desc */
3433                 tx_buf++;
3434                 tx_desc++;
3435                 i++;
3436                 if (unlikely(!i)) {
3437                         i -= tx_ring->count;
3438                         tx_buf = tx_ring->tx_bi;
3439                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3440                 }
3441
3442                 /* update budget accounting */
3443                 budget--;
3444         } while (likely(budget));
3445
3446         i += tx_ring->count;
3447         tx_ring->next_to_clean = i;
3448
3449         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3450                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3451         }
3452         return budget > 0;
3453 }
3454
3455 /**
3456  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3457  * @irq: interrupt number
3458  * @data: pointer to a q_vector
3459  **/
3460 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3461 {
3462         struct i40e_q_vector *q_vector = data;
3463         struct i40e_vsi *vsi;
3464
3465         if (!q_vector->tx.ring)
3466                 return IRQ_HANDLED;
3467
3468         vsi = q_vector->tx.ring->vsi;
3469         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3470
3471         return IRQ_HANDLED;
3472 }
3473
3474 /**
3475  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3476  * @vsi: the VSI being configured
3477  * @v_idx: vector index
3478  * @qp_idx: queue pair index
3479  **/
3480 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3481 {
3482         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3483         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3484         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3485
3486         tx_ring->q_vector = q_vector;
3487         tx_ring->next = q_vector->tx.ring;
3488         q_vector->tx.ring = tx_ring;
3489         q_vector->tx.count++;
3490
3491         rx_ring->q_vector = q_vector;
3492         rx_ring->next = q_vector->rx.ring;
3493         q_vector->rx.ring = rx_ring;
3494         q_vector->rx.count++;
3495 }
3496
3497 /**
3498  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3499  * @vsi: the VSI being configured
3500  *
3501  * This function maps descriptor rings to the queue-specific vectors
3502  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3503  * one vector per queue pair, but on a constrained vector budget, we
3504  * group the queue pairs as "efficiently" as possible.
3505  **/
3506 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3507 {
3508         int qp_remaining = vsi->num_queue_pairs;
3509         int q_vectors = vsi->num_q_vectors;
3510         int num_ringpairs;
3511         int v_start = 0;
3512         int qp_idx = 0;
3513
3514         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3515          * group them so there are multiple queues per vector.
3516          * It is also important to go through all the vectors available to be
3517          * sure that if we don't use all the vectors, that the remaining vectors
3518          * are cleared. This is especially important when decreasing the
3519          * number of queues in use.
3520          */
3521         for (; v_start < q_vectors; v_start++) {
3522                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3523
3524                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3525
3526                 q_vector->num_ringpairs = num_ringpairs;
3527
3528                 q_vector->rx.count = 0;
3529                 q_vector->tx.count = 0;
3530                 q_vector->rx.ring = NULL;
3531                 q_vector->tx.ring = NULL;
3532
3533                 while (num_ringpairs--) {
3534                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3535                         qp_idx++;
3536                         qp_remaining--;
3537                 }
3538         }
3539 }
3540
3541 /**
3542  * i40e_vsi_request_irq - Request IRQ from the OS
3543  * @vsi: the VSI being configured
3544  * @basename: name for the vector
3545  **/
3546 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3547 {
3548         struct i40e_pf *pf = vsi->back;
3549         int err;
3550
3551         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3552                 err = i40e_vsi_request_irq_msix(vsi, basename);
3553         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3554                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3555                                   pf->int_name, pf);
3556         else
3557                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3558                                   pf->int_name, pf);
3559
3560         if (err)
3561                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3562
3563         return err;
3564 }
3565
3566 #ifdef CONFIG_NET_POLL_CONTROLLER
3567 /**
3568  * i40e_netpoll - A Polling 'interrupt'handler
3569  * @netdev: network interface device structure
3570  *
3571  * This is used by netconsole to send skbs without having to re-enable
3572  * interrupts.  It's not called while the normal interrupt routine is executing.
3573  **/
3574 #ifdef I40E_FCOE
3575 void i40e_netpoll(struct net_device *netdev)
3576 #else
3577 static void i40e_netpoll(struct net_device *netdev)
3578 #endif
3579 {
3580         struct i40e_netdev_priv *np = netdev_priv(netdev);
3581         struct i40e_vsi *vsi = np->vsi;
3582         struct i40e_pf *pf = vsi->back;
3583         int i;
3584
3585         /* if interface is down do nothing */
3586         if (test_bit(__I40E_DOWN, &vsi->state))
3587                 return;
3588
3589         pf->flags |= I40E_FLAG_IN_NETPOLL;
3590         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3591                 for (i = 0; i < vsi->num_q_vectors; i++)
3592                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3593         } else {
3594                 i40e_intr(pf->pdev->irq, netdev);
3595         }
3596         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3597 }
3598 #endif
3599
3600 /**
3601  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3602  * @pf: the PF being configured
3603  * @pf_q: the PF queue
3604  * @enable: enable or disable state of the queue
3605  *
3606  * This routine will wait for the given Tx queue of the PF to reach the
3607  * enabled or disabled state.
3608  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3609  * multiple retries; else will return 0 in case of success.
3610  **/
3611 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3612 {
3613         int i;
3614         u32 tx_reg;
3615
3616         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3617                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3618                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3619                         break;
3620
3621                 usleep_range(10, 20);
3622         }
3623         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3624                 return -ETIMEDOUT;
3625
3626         return 0;
3627 }
3628
3629 /**
3630  * i40e_vsi_control_tx - Start or stop a VSI's rings
3631  * @vsi: the VSI being configured
3632  * @enable: start or stop the rings
3633  **/
3634 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3635 {
3636         struct i40e_pf *pf = vsi->back;
3637         struct i40e_hw *hw = &pf->hw;
3638         int i, j, pf_q, ret = 0;
3639         u32 tx_reg;
3640
3641         pf_q = vsi->base_queue;
3642         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3643
3644                 /* warn the TX unit of coming changes */
3645                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3646                 if (!enable)
3647                         usleep_range(10, 20);
3648
3649                 for (j = 0; j < 50; j++) {
3650                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3651                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3652                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3653                                 break;
3654                         usleep_range(1000, 2000);
3655                 }
3656                 /* Skip if the queue is already in the requested state */
3657                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3658                         continue;
3659
3660                 /* turn on/off the queue */
3661                 if (enable) {
3662                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3663                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3664                 } else {
3665                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3666                 }
3667
3668                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3669                 /* No waiting for the Tx queue to disable */
3670                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3671                         continue;
3672
3673                 /* wait for the change to finish */
3674                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3675                 if (ret) {
3676                         dev_info(&pf->pdev->dev,
3677                                  "VSI seid %d Tx ring %d %sable timeout\n",
3678                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3679                         break;
3680                 }
3681         }
3682
3683         if (hw->revision_id == 0)
3684                 mdelay(50);
3685         return ret;
3686 }
3687
3688 /**
3689  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3690  * @pf: the PF being configured
3691  * @pf_q: the PF queue
3692  * @enable: enable or disable state of the queue
3693  *
3694  * This routine will wait for the given Rx queue of the PF to reach the
3695  * enabled or disabled state.
3696  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3697  * multiple retries; else will return 0 in case of success.
3698  **/
3699 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3700 {
3701         int i;
3702         u32 rx_reg;
3703
3704         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3705                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3706                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3707                         break;
3708
3709                 usleep_range(10, 20);
3710         }
3711         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3712                 return -ETIMEDOUT;
3713
3714         return 0;
3715 }
3716
3717 /**
3718  * i40e_vsi_control_rx - Start or stop a VSI's rings
3719  * @vsi: the VSI being configured
3720  * @enable: start or stop the rings
3721  **/
3722 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3723 {
3724         struct i40e_pf *pf = vsi->back;
3725         struct i40e_hw *hw = &pf->hw;
3726         int i, j, pf_q, ret = 0;
3727         u32 rx_reg;
3728
3729         pf_q = vsi->base_queue;
3730         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3731                 for (j = 0; j < 50; j++) {
3732                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3733                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3734                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3735                                 break;
3736                         usleep_range(1000, 2000);
3737                 }
3738
3739                 /* Skip if the queue is already in the requested state */
3740                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3741                         continue;
3742
3743                 /* turn on/off the queue */
3744                 if (enable)
3745                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3746                 else
3747                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3748                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3749
3750                 /* wait for the change to finish */
3751                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3752                 if (ret) {
3753                         dev_info(&pf->pdev->dev,
3754                                  "VSI seid %d Rx ring %d %sable timeout\n",
3755                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3756                         break;
3757                 }
3758         }
3759
3760         return ret;
3761 }
3762
3763 /**
3764  * i40e_vsi_control_rings - Start or stop a VSI's rings
3765  * @vsi: the VSI being configured
3766  * @enable: start or stop the rings
3767  **/
3768 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3769 {
3770         int ret = 0;
3771
3772         /* do rx first for enable and last for disable */
3773         if (request) {
3774                 ret = i40e_vsi_control_rx(vsi, request);
3775                 if (ret)
3776                         return ret;
3777                 ret = i40e_vsi_control_tx(vsi, request);
3778         } else {
3779                 /* Ignore return value, we need to shutdown whatever we can */
3780                 i40e_vsi_control_tx(vsi, request);
3781                 i40e_vsi_control_rx(vsi, request);
3782         }
3783
3784         return ret;
3785 }
3786
3787 /**
3788  * i40e_vsi_free_irq - Free the irq association with the OS
3789  * @vsi: the VSI being configured
3790  **/
3791 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3792 {
3793         struct i40e_pf *pf = vsi->back;
3794         struct i40e_hw *hw = &pf->hw;
3795         int base = vsi->base_vector;
3796         u32 val, qp;
3797         int i;
3798
3799         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3800                 if (!vsi->q_vectors)
3801                         return;
3802
3803                 if (!vsi->irqs_ready)
3804                         return;
3805
3806                 vsi->irqs_ready = false;
3807                 for (i = 0; i < vsi->num_q_vectors; i++) {
3808                         u16 vector = i + base;
3809
3810                         /* free only the irqs that were actually requested */
3811                         if (!vsi->q_vectors[i] ||
3812                             !vsi->q_vectors[i]->num_ringpairs)
3813                                 continue;
3814
3815                         /* clear the affinity_mask in the IRQ descriptor */
3816                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3817                                               NULL);
3818                         free_irq(pf->msix_entries[vector].vector,
3819                                  vsi->q_vectors[i]);
3820
3821                         /* Tear down the interrupt queue link list
3822                          *
3823                          * We know that they come in pairs and always
3824                          * the Rx first, then the Tx.  To clear the
3825                          * link list, stick the EOL value into the
3826                          * next_q field of the registers.
3827                          */
3828                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3829                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3830                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3831                         val |= I40E_QUEUE_END_OF_LIST
3832                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3833                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3834
3835                         while (qp != I40E_QUEUE_END_OF_LIST) {
3836                                 u32 next;
3837
3838                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3839
3840                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3841                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3842                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3843                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3844
3845                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3846                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3847
3848                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3849
3850                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3851
3852                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3853                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3854
3855                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3856                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3857                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3858                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3859
3860                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3861                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3862
3863                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3864                                 qp = next;
3865                         }
3866                 }
3867         } else {
3868                 free_irq(pf->pdev->irq, pf);
3869
3870                 val = rd32(hw, I40E_PFINT_LNKLST0);
3871                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3872                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3873                 val |= I40E_QUEUE_END_OF_LIST
3874                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3875                 wr32(hw, I40E_PFINT_LNKLST0, val);
3876
3877                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3878                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3879                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3880                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3881                          I40E_QINT_RQCTL_INTEVENT_MASK);
3882
3883                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3884                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3885
3886                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3887
3888                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3889
3890                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3891                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3892                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3893                          I40E_QINT_TQCTL_INTEVENT_MASK);
3894
3895                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3896                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3897
3898                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3899         }
3900 }
3901
3902 /**
3903  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3904  * @vsi: the VSI being configured
3905  * @v_idx: Index of vector to be freed
3906  *
3907  * This function frees the memory allocated to the q_vector.  In addition if
3908  * NAPI is enabled it will delete any references to the NAPI struct prior
3909  * to freeing the q_vector.
3910  **/
3911 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3912 {
3913         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3914         struct i40e_ring *ring;
3915
3916         if (!q_vector)
3917                 return;
3918
3919         /* disassociate q_vector from rings */
3920         i40e_for_each_ring(ring, q_vector->tx)
3921                 ring->q_vector = NULL;
3922
3923         i40e_for_each_ring(ring, q_vector->rx)
3924                 ring->q_vector = NULL;
3925
3926         /* only VSI w/ an associated netdev is set up w/ NAPI */
3927         if (vsi->netdev)
3928                 netif_napi_del(&q_vector->napi);
3929
3930         vsi->q_vectors[v_idx] = NULL;
3931
3932         kfree_rcu(q_vector, rcu);
3933 }
3934
3935 /**
3936  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3937  * @vsi: the VSI being un-configured
3938  *
3939  * This frees the memory allocated to the q_vectors and
3940  * deletes references to the NAPI struct.
3941  **/
3942 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3943 {
3944         int v_idx;
3945
3946         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3947                 i40e_free_q_vector(vsi, v_idx);
3948 }
3949
3950 /**
3951  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3952  * @pf: board private structure
3953  **/
3954 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3955 {
3956         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3957         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3958                 pci_disable_msix(pf->pdev);
3959                 kfree(pf->msix_entries);
3960                 pf->msix_entries = NULL;
3961                 kfree(pf->irq_pile);
3962                 pf->irq_pile = NULL;
3963         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3964                 pci_disable_msi(pf->pdev);
3965         }
3966         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3967 }
3968
3969 /**
3970  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3971  * @pf: board private structure
3972  *
3973  * We go through and clear interrupt specific resources and reset the structure
3974  * to pre-load conditions
3975  **/
3976 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3977 {
3978         int i;
3979
3980         i40e_stop_misc_vector(pf);
3981         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3982                 synchronize_irq(pf->msix_entries[0].vector);
3983                 free_irq(pf->msix_entries[0].vector, pf);
3984         }
3985
3986         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3987         for (i = 0; i < pf->num_alloc_vsi; i++)
3988                 if (pf->vsi[i])
3989                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3990         i40e_reset_interrupt_capability(pf);
3991 }
3992
3993 /**
3994  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3995  * @vsi: the VSI being configured
3996  **/
3997 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3998 {
3999         int q_idx;
4000
4001         if (!vsi->netdev)
4002                 return;
4003
4004         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4005                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4006 }
4007
4008 /**
4009  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4010  * @vsi: the VSI being configured
4011  **/
4012 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4013 {
4014         int q_idx;
4015
4016         if (!vsi->netdev)
4017                 return;
4018
4019         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4020                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4021 }
4022
4023 /**
4024  * i40e_vsi_close - Shut down a VSI
4025  * @vsi: the vsi to be quelled
4026  **/
4027 static void i40e_vsi_close(struct i40e_vsi *vsi)
4028 {
4029         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4030                 i40e_down(vsi);
4031         i40e_vsi_free_irq(vsi);
4032         i40e_vsi_free_tx_resources(vsi);
4033         i40e_vsi_free_rx_resources(vsi);
4034         vsi->current_netdev_flags = 0;
4035 }
4036
4037 /**
4038  * i40e_quiesce_vsi - Pause a given VSI
4039  * @vsi: the VSI being paused
4040  **/
4041 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4042 {
4043         if (test_bit(__I40E_DOWN, &vsi->state))
4044                 return;
4045
4046         /* No need to disable FCoE VSI when Tx suspended */
4047         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4048             vsi->type == I40E_VSI_FCOE) {
4049                 dev_dbg(&vsi->back->pdev->dev,
4050                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4051                 return;
4052         }
4053
4054         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4055         if (vsi->netdev && netif_running(vsi->netdev)) {
4056                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4057         } else {
4058                 i40e_vsi_close(vsi);
4059         }
4060 }
4061
4062 /**
4063  * i40e_unquiesce_vsi - Resume a given VSI
4064  * @vsi: the VSI being resumed
4065  **/
4066 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4067 {
4068         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4069                 return;
4070
4071         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4072         if (vsi->netdev && netif_running(vsi->netdev))
4073                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4074         else
4075                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4076 }
4077
4078 /**
4079  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4080  * @pf: the PF
4081  **/
4082 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4083 {
4084         int v;
4085
4086         for (v = 0; v < pf->num_alloc_vsi; v++) {
4087                 if (pf->vsi[v])
4088                         i40e_quiesce_vsi(pf->vsi[v]);
4089         }
4090 }
4091
4092 /**
4093  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4094  * @pf: the PF
4095  **/
4096 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4097 {
4098         int v;
4099
4100         for (v = 0; v < pf->num_alloc_vsi; v++) {
4101                 if (pf->vsi[v])
4102                         i40e_unquiesce_vsi(pf->vsi[v]);
4103         }
4104 }
4105
4106 #ifdef CONFIG_I40E_DCB
4107 /**
4108  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4109  * @vsi: the VSI being configured
4110  *
4111  * This function waits for the given VSI's Tx queues to be disabled.
4112  **/
4113 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4114 {
4115         struct i40e_pf *pf = vsi->back;
4116         int i, pf_q, ret;
4117
4118         pf_q = vsi->base_queue;
4119         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4120                 /* Check and wait for the disable status of the queue */
4121                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4122                 if (ret) {
4123                         dev_info(&pf->pdev->dev,
4124                                  "VSI seid %d Tx ring %d disable timeout\n",
4125                                  vsi->seid, pf_q);
4126                         return ret;
4127                 }
4128         }
4129
4130         return 0;
4131 }
4132
4133 /**
4134  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4135  * @pf: the PF
4136  *
4137  * This function waits for the Tx queues to be in disabled state for all the
4138  * VSIs that are managed by this PF.
4139  **/
4140 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4141 {
4142         int v, ret = 0;
4143
4144         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4145                 /* No need to wait for FCoE VSI queues */
4146                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4147                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4148                         if (ret)
4149                                 break;
4150                 }
4151         }
4152
4153         return ret;
4154 }
4155
4156 #endif
4157
4158 /**
4159  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4160  * @q_idx: TX queue number
4161  * @vsi: Pointer to VSI struct
4162  *
4163  * This function checks specified queue for given VSI. Detects hung condition.
4164  * Sets hung bit since it is two step process. Before next run of service task
4165  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4166  * hung condition remain unchanged and during subsequent run, this function
4167  * issues SW interrupt to recover from hung condition.
4168  **/
4169 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4170 {
4171         struct i40e_ring *tx_ring = NULL;
4172         struct i40e_pf  *pf;
4173         u32 head, val, tx_pending;
4174         int i;
4175
4176         pf = vsi->back;
4177
4178         /* now that we have an index, find the tx_ring struct */
4179         for (i = 0; i < vsi->num_queue_pairs; i++) {
4180                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4181                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4182                                 tx_ring = vsi->tx_rings[i];
4183                                 break;
4184                         }
4185                 }
4186         }
4187
4188         if (!tx_ring)
4189                 return;
4190
4191         /* Read interrupt register */
4192         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4193                 val = rd32(&pf->hw,
4194                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4195                                                tx_ring->vsi->base_vector - 1));
4196         else
4197                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4198
4199         head = i40e_get_head(tx_ring);
4200
4201         tx_pending = i40e_get_tx_pending(tx_ring);
4202
4203         /* Interrupts are disabled and TX pending is non-zero,
4204          * trigger the SW interrupt (don't wait). Worst case
4205          * there will be one extra interrupt which may result
4206          * into not cleaning any queues because queues are cleaned.
4207          */
4208         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4209                 i40e_force_wb(vsi, tx_ring->q_vector);
4210 }
4211
4212 /**
4213  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4214  * @pf:  pointer to PF struct
4215  *
4216  * LAN VSI has netdev and netdev has TX queues. This function is to check
4217  * each of those TX queues if they are hung, trigger recovery by issuing
4218  * SW interrupt.
4219  **/
4220 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4221 {
4222         struct net_device *netdev;
4223         struct i40e_vsi *vsi;
4224         int i;
4225
4226         /* Only for LAN VSI */
4227         vsi = pf->vsi[pf->lan_vsi];
4228
4229         if (!vsi)
4230                 return;
4231
4232         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4233         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4234             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4235                 return;
4236
4237         /* Make sure type is MAIN VSI */
4238         if (vsi->type != I40E_VSI_MAIN)
4239                 return;
4240
4241         netdev = vsi->netdev;
4242         if (!netdev)
4243                 return;
4244
4245         /* Bail out if netif_carrier is not OK */
4246         if (!netif_carrier_ok(netdev))
4247                 return;
4248
4249         /* Go thru' TX queues for netdev */
4250         for (i = 0; i < netdev->num_tx_queues; i++) {
4251                 struct netdev_queue *q;
4252
4253                 q = netdev_get_tx_queue(netdev, i);
4254                 if (q)
4255                         i40e_detect_recover_hung_queue(i, vsi);
4256         }
4257 }
4258
4259 /**
4260  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4261  * @pf: pointer to PF
4262  *
4263  * Get TC map for ISCSI PF type that will include iSCSI TC
4264  * and LAN TC.
4265  **/
4266 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4267 {
4268         struct i40e_dcb_app_priority_table app;
4269         struct i40e_hw *hw = &pf->hw;
4270         u8 enabled_tc = 1; /* TC0 is always enabled */
4271         u8 tc, i;
4272         /* Get the iSCSI APP TLV */
4273         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4274
4275         for (i = 0; i < dcbcfg->numapps; i++) {
4276                 app = dcbcfg->app[i];
4277                 if (app.selector == I40E_APP_SEL_TCPIP &&
4278                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4279                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4280                         enabled_tc |= BIT_ULL(tc);
4281                         break;
4282                 }
4283         }
4284
4285         return enabled_tc;
4286 }
4287
4288 /**
4289  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4290  * @dcbcfg: the corresponding DCBx configuration structure
4291  *
4292  * Return the number of TCs from given DCBx configuration
4293  **/
4294 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4295 {
4296         u8 num_tc = 0;
4297         int i;
4298
4299         /* Scan the ETS Config Priority Table to find
4300          * traffic class enabled for a given priority
4301          * and use the traffic class index to get the
4302          * number of traffic classes enabled
4303          */
4304         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4305                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4306                         num_tc = dcbcfg->etscfg.prioritytable[i];
4307         }
4308
4309         /* Traffic class index starts from zero so
4310          * increment to return the actual count
4311          */
4312         return num_tc + 1;
4313 }
4314
4315 /**
4316  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4317  * @dcbcfg: the corresponding DCBx configuration structure
4318  *
4319  * Query the current DCB configuration and return the number of
4320  * traffic classes enabled from the given DCBX config
4321  **/
4322 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4323 {
4324         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4325         u8 enabled_tc = 1;
4326         u8 i;
4327
4328         for (i = 0; i < num_tc; i++)
4329                 enabled_tc |= BIT(i);
4330
4331         return enabled_tc;
4332 }
4333
4334 /**
4335  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4336  * @pf: PF being queried
4337  *
4338  * Return number of traffic classes enabled for the given PF
4339  **/
4340 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4341 {
4342         struct i40e_hw *hw = &pf->hw;
4343         u8 i, enabled_tc;
4344         u8 num_tc = 0;
4345         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4346
4347         /* If DCB is not enabled then always in single TC */
4348         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4349                 return 1;
4350
4351         /* SFP mode will be enabled for all TCs on port */
4352         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4353                 return i40e_dcb_get_num_tc(dcbcfg);
4354
4355         /* MFP mode return count of enabled TCs for this PF */
4356         if (pf->hw.func_caps.iscsi)
4357                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4358         else
4359                 return 1; /* Only TC0 */
4360
4361         /* At least have TC0 */
4362         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4363         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4364                 if (enabled_tc & BIT_ULL(i))
4365                         num_tc++;
4366         }
4367         return num_tc;
4368 }
4369
4370 /**
4371  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4372  * @pf: PF being queried
4373  *
4374  * Return a bitmap for first enabled traffic class for this PF.
4375  **/
4376 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4377 {
4378         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4379         u8 i = 0;
4380
4381         if (!enabled_tc)
4382                 return 0x1; /* TC0 */
4383
4384         /* Find the first enabled TC */
4385         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4386                 if (enabled_tc & BIT_ULL(i))
4387                         break;
4388         }
4389
4390         return BIT(i);
4391 }
4392
4393 /**
4394  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4395  * @pf: PF being queried
4396  *
4397  * Return a bitmap for enabled traffic classes for this PF.
4398  **/
4399 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4400 {
4401         /* If DCB is not enabled for this PF then just return default TC */
4402         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4403                 return i40e_pf_get_default_tc(pf);
4404
4405         /* SFP mode we want PF to be enabled for all TCs */
4406         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4407                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4408
4409         /* MFP enabled and iSCSI PF type */
4410         if (pf->hw.func_caps.iscsi)
4411                 return i40e_get_iscsi_tc_map(pf);
4412         else
4413                 return i40e_pf_get_default_tc(pf);
4414 }
4415
4416 /**
4417  * i40e_vsi_get_bw_info - Query VSI BW Information
4418  * @vsi: the VSI being queried
4419  *
4420  * Returns 0 on success, negative value on failure
4421  **/
4422 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4423 {
4424         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4425         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4426         struct i40e_pf *pf = vsi->back;
4427         struct i40e_hw *hw = &pf->hw;
4428         i40e_status ret;
4429         u32 tc_bw_max;
4430         int i;
4431
4432         /* Get the VSI level BW configuration */
4433         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4434         if (ret) {
4435                 dev_info(&pf->pdev->dev,
4436                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4437                          i40e_stat_str(&pf->hw, ret),
4438                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4439                 return -EINVAL;
4440         }
4441
4442         /* Get the VSI level BW configuration per TC */
4443         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4444                                                NULL);
4445         if (ret) {
4446                 dev_info(&pf->pdev->dev,
4447                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4448                          i40e_stat_str(&pf->hw, ret),
4449                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4450                 return -EINVAL;
4451         }
4452
4453         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4454                 dev_info(&pf->pdev->dev,
4455                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4456                          bw_config.tc_valid_bits,
4457                          bw_ets_config.tc_valid_bits);
4458                 /* Still continuing */
4459         }
4460
4461         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4462         vsi->bw_max_quanta = bw_config.max_bw;
4463         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4464                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4465         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4466                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4467                 vsi->bw_ets_limit_credits[i] =
4468                                         le16_to_cpu(bw_ets_config.credits[i]);
4469                 /* 3 bits out of 4 for each TC */
4470                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4471         }
4472
4473         return 0;
4474 }
4475
4476 /**
4477  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4478  * @vsi: the VSI being configured
4479  * @enabled_tc: TC bitmap
4480  * @bw_credits: BW shared credits per TC
4481  *
4482  * Returns 0 on success, negative value on failure
4483  **/
4484 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4485                                        u8 *bw_share)
4486 {
4487         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4488         i40e_status ret;
4489         int i;
4490
4491         bw_data.tc_valid_bits = enabled_tc;
4492         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4493                 bw_data.tc_bw_credits[i] = bw_share[i];
4494
4495         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4496                                        NULL);
4497         if (ret) {
4498                 dev_info(&vsi->back->pdev->dev,
4499                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4500                          vsi->back->hw.aq.asq_last_status);
4501                 return -EINVAL;
4502         }
4503
4504         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4505                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4506
4507         return 0;
4508 }
4509
4510 /**
4511  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4512  * @vsi: the VSI being configured
4513  * @enabled_tc: TC map to be enabled
4514  *
4515  **/
4516 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4517 {
4518         struct net_device *netdev = vsi->netdev;
4519         struct i40e_pf *pf = vsi->back;
4520         struct i40e_hw *hw = &pf->hw;
4521         u8 netdev_tc = 0;
4522         int i;
4523         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4524
4525         if (!netdev)
4526                 return;
4527
4528         if (!enabled_tc) {
4529                 netdev_reset_tc(netdev);
4530                 return;
4531         }
4532
4533         /* Set up actual enabled TCs on the VSI */
4534         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4535                 return;
4536
4537         /* set per TC queues for the VSI */
4538         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4539                 /* Only set TC queues for enabled tcs
4540                  *
4541                  * e.g. For a VSI that has TC0 and TC3 enabled the
4542                  * enabled_tc bitmap would be 0x00001001; the driver
4543                  * will set the numtc for netdev as 2 that will be
4544                  * referenced by the netdev layer as TC 0 and 1.
4545                  */
4546                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4547                         netdev_set_tc_queue(netdev,
4548                                         vsi->tc_config.tc_info[i].netdev_tc,
4549                                         vsi->tc_config.tc_info[i].qcount,
4550                                         vsi->tc_config.tc_info[i].qoffset);
4551         }
4552
4553         /* Assign UP2TC map for the VSI */
4554         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4555                 /* Get the actual TC# for the UP */
4556                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4557                 /* Get the mapped netdev TC# for the UP */
4558                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4559                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4560         }
4561 }
4562
4563 /**
4564  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4565  * @vsi: the VSI being configured
4566  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4567  **/
4568 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4569                                       struct i40e_vsi_context *ctxt)
4570 {
4571         /* copy just the sections touched not the entire info
4572          * since not all sections are valid as returned by
4573          * update vsi params
4574          */
4575         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4576         memcpy(&vsi->info.queue_mapping,
4577                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4578         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4579                sizeof(vsi->info.tc_mapping));
4580 }
4581
4582 /**
4583  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4584  * @vsi: VSI to be configured
4585  * @enabled_tc: TC bitmap
4586  *
4587  * This configures a particular VSI for TCs that are mapped to the
4588  * given TC bitmap. It uses default bandwidth share for TCs across
4589  * VSIs to configure TC for a particular VSI.
4590  *
4591  * NOTE:
4592  * It is expected that the VSI queues have been quisced before calling
4593  * this function.
4594  **/
4595 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4596 {
4597         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4598         struct i40e_vsi_context ctxt;
4599         int ret = 0;
4600         int i;
4601
4602         /* Check if enabled_tc is same as existing or new TCs */
4603         if (vsi->tc_config.enabled_tc == enabled_tc)
4604                 return ret;
4605
4606         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4607         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4608                 if (enabled_tc & BIT_ULL(i))
4609                         bw_share[i] = 1;
4610         }
4611
4612         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4613         if (ret) {
4614                 dev_info(&vsi->back->pdev->dev,
4615                          "Failed configuring TC map %d for VSI %d\n",
4616                          enabled_tc, vsi->seid);
4617                 goto out;
4618         }
4619
4620         /* Update Queue Pairs Mapping for currently enabled UPs */
4621         ctxt.seid = vsi->seid;
4622         ctxt.pf_num = vsi->back->hw.pf_id;
4623         ctxt.vf_num = 0;
4624         ctxt.uplink_seid = vsi->uplink_seid;
4625         ctxt.info = vsi->info;
4626         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4627
4628         /* Update the VSI after updating the VSI queue-mapping information */
4629         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4630         if (ret) {
4631                 dev_info(&vsi->back->pdev->dev,
4632                          "Update vsi tc config failed, err %s aq_err %s\n",
4633                          i40e_stat_str(&vsi->back->hw, ret),
4634                          i40e_aq_str(&vsi->back->hw,
4635                                      vsi->back->hw.aq.asq_last_status));
4636                 goto out;
4637         }
4638         /* update the local VSI info with updated queue map */
4639         i40e_vsi_update_queue_map(vsi, &ctxt);
4640         vsi->info.valid_sections = 0;
4641
4642         /* Update current VSI BW information */
4643         ret = i40e_vsi_get_bw_info(vsi);
4644         if (ret) {
4645                 dev_info(&vsi->back->pdev->dev,
4646                          "Failed updating vsi bw info, err %s aq_err %s\n",
4647                          i40e_stat_str(&vsi->back->hw, ret),
4648                          i40e_aq_str(&vsi->back->hw,
4649                                      vsi->back->hw.aq.asq_last_status));
4650                 goto out;
4651         }
4652
4653         /* Update the netdev TC setup */
4654         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4655 out:
4656         return ret;
4657 }
4658
4659 /**
4660  * i40e_veb_config_tc - Configure TCs for given VEB
4661  * @veb: given VEB
4662  * @enabled_tc: TC bitmap
4663  *
4664  * Configures given TC bitmap for VEB (switching) element
4665  **/
4666 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4667 {
4668         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4669         struct i40e_pf *pf = veb->pf;
4670         int ret = 0;
4671         int i;
4672
4673         /* No TCs or already enabled TCs just return */
4674         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4675                 return ret;
4676
4677         bw_data.tc_valid_bits = enabled_tc;
4678         /* bw_data.absolute_credits is not set (relative) */
4679
4680         /* Enable ETS TCs with equal BW Share for now */
4681         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4682                 if (enabled_tc & BIT_ULL(i))
4683                         bw_data.tc_bw_share_credits[i] = 1;
4684         }
4685
4686         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4687                                                    &bw_data, NULL);
4688         if (ret) {
4689                 dev_info(&pf->pdev->dev,
4690                          "VEB bw config failed, err %s aq_err %s\n",
4691                          i40e_stat_str(&pf->hw, ret),
4692                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4693                 goto out;
4694         }
4695
4696         /* Update the BW information */
4697         ret = i40e_veb_get_bw_info(veb);
4698         if (ret) {
4699                 dev_info(&pf->pdev->dev,
4700                          "Failed getting veb bw config, err %s aq_err %s\n",
4701                          i40e_stat_str(&pf->hw, ret),
4702                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4703         }
4704
4705 out:
4706         return ret;
4707 }
4708
4709 #ifdef CONFIG_I40E_DCB
4710 /**
4711  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4712  * @pf: PF struct
4713  *
4714  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4715  * the caller would've quiesce all the VSIs before calling
4716  * this function
4717  **/
4718 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4719 {
4720         u8 tc_map = 0;
4721         int ret;
4722         u8 v;
4723
4724         /* Enable the TCs available on PF to all VEBs */
4725         tc_map = i40e_pf_get_tc_map(pf);
4726         for (v = 0; v < I40E_MAX_VEB; v++) {
4727                 if (!pf->veb[v])
4728                         continue;
4729                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4730                 if (ret) {
4731                         dev_info(&pf->pdev->dev,
4732                                  "Failed configuring TC for VEB seid=%d\n",
4733                                  pf->veb[v]->seid);
4734                         /* Will try to configure as many components */
4735                 }
4736         }
4737
4738         /* Update each VSI */
4739         for (v = 0; v < pf->num_alloc_vsi; v++) {
4740                 if (!pf->vsi[v])
4741                         continue;
4742
4743                 /* - Enable all TCs for the LAN VSI
4744 #ifdef I40E_FCOE
4745                  * - For FCoE VSI only enable the TC configured
4746                  *   as per the APP TLV
4747 #endif
4748                  * - For all others keep them at TC0 for now
4749                  */
4750                 if (v == pf->lan_vsi)
4751                         tc_map = i40e_pf_get_tc_map(pf);
4752                 else
4753                         tc_map = i40e_pf_get_default_tc(pf);
4754 #ifdef I40E_FCOE
4755                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4756                         tc_map = i40e_get_fcoe_tc_map(pf);
4757 #endif /* #ifdef I40E_FCOE */
4758
4759                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4760                 if (ret) {
4761                         dev_info(&pf->pdev->dev,
4762                                  "Failed configuring TC for VSI seid=%d\n",
4763                                  pf->vsi[v]->seid);
4764                         /* Will try to configure as many components */
4765                 } else {
4766                         /* Re-configure VSI vectors based on updated TC map */
4767                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4768                         if (pf->vsi[v]->netdev)
4769                                 i40e_dcbnl_set_all(pf->vsi[v]);
4770                 }
4771         }
4772 }
4773
4774 /**
4775  * i40e_resume_port_tx - Resume port Tx
4776  * @pf: PF struct
4777  *
4778  * Resume a port's Tx and issue a PF reset in case of failure to
4779  * resume.
4780  **/
4781 static int i40e_resume_port_tx(struct i40e_pf *pf)
4782 {
4783         struct i40e_hw *hw = &pf->hw;
4784         int ret;
4785
4786         ret = i40e_aq_resume_port_tx(hw, NULL);
4787         if (ret) {
4788                 dev_info(&pf->pdev->dev,
4789                          "Resume Port Tx failed, err %s aq_err %s\n",
4790                           i40e_stat_str(&pf->hw, ret),
4791                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4792                 /* Schedule PF reset to recover */
4793                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4794                 i40e_service_event_schedule(pf);
4795         }
4796
4797         return ret;
4798 }
4799
4800 /**
4801  * i40e_init_pf_dcb - Initialize DCB configuration
4802  * @pf: PF being configured
4803  *
4804  * Query the current DCB configuration and cache it
4805  * in the hardware structure
4806  **/
4807 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4808 {
4809         struct i40e_hw *hw = &pf->hw;
4810         int err = 0;
4811
4812         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4813         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4814             (pf->hw.aq.fw_maj_ver < 4))
4815                 goto out;
4816
4817         /* Get the initial DCB configuration */
4818         err = i40e_init_dcb(hw);
4819         if (!err) {
4820                 /* Device/Function is not DCBX capable */
4821                 if ((!hw->func_caps.dcb) ||
4822                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4823                         dev_info(&pf->pdev->dev,
4824                                  "DCBX offload is not supported or is disabled for this PF.\n");
4825
4826                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4827                                 goto out;
4828
4829                 } else {
4830                         /* When status is not DISABLED then DCBX in FW */
4831                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4832                                        DCB_CAP_DCBX_VER_IEEE;
4833
4834                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4835                         /* Enable DCB tagging only when more than one TC */
4836                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4837                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4838                         dev_dbg(&pf->pdev->dev,
4839                                 "DCBX offload is supported for this PF.\n");
4840                 }
4841         } else {
4842                 dev_info(&pf->pdev->dev,
4843                          "Query for DCB configuration failed, err %s aq_err %s\n",
4844                          i40e_stat_str(&pf->hw, err),
4845                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4846         }
4847
4848 out:
4849         return err;
4850 }
4851 #endif /* CONFIG_I40E_DCB */
4852 #define SPEED_SIZE 14
4853 #define FC_SIZE 8
4854 /**
4855  * i40e_print_link_message - print link up or down
4856  * @vsi: the VSI for which link needs a message
4857  */
4858 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4859 {
4860         char speed[SPEED_SIZE] = "Unknown";
4861         char fc[FC_SIZE] = "RX/TX";
4862
4863         if (!isup) {
4864                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4865                 return;
4866         }
4867
4868         /* Warn user if link speed on NPAR enabled partition is not at
4869          * least 10GB
4870          */
4871         if (vsi->back->hw.func_caps.npar_enable &&
4872             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4873              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4874                 netdev_warn(vsi->netdev,
4875                             "The partition detected link speed that is less than 10Gbps\n");
4876
4877         switch (vsi->back->hw.phy.link_info.link_speed) {
4878         case I40E_LINK_SPEED_40GB:
4879                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4880                 break;
4881         case I40E_LINK_SPEED_20GB:
4882                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4883                 break;
4884         case I40E_LINK_SPEED_10GB:
4885                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4886                 break;
4887         case I40E_LINK_SPEED_1GB:
4888                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4889                 break;
4890         case I40E_LINK_SPEED_100MB:
4891                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4892                 break;
4893         default:
4894                 break;
4895         }
4896
4897         switch (vsi->back->hw.fc.current_mode) {
4898         case I40E_FC_FULL:
4899                 strlcpy(fc, "RX/TX", FC_SIZE);
4900                 break;
4901         case I40E_FC_TX_PAUSE:
4902                 strlcpy(fc, "TX", FC_SIZE);
4903                 break;
4904         case I40E_FC_RX_PAUSE:
4905                 strlcpy(fc, "RX", FC_SIZE);
4906                 break;
4907         default:
4908                 strlcpy(fc, "None", FC_SIZE);
4909                 break;
4910         }
4911
4912         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4913                     speed, fc);
4914 }
4915
4916 /**
4917  * i40e_up_complete - Finish the last steps of bringing up a connection
4918  * @vsi: the VSI being configured
4919  **/
4920 static int i40e_up_complete(struct i40e_vsi *vsi)
4921 {
4922         struct i40e_pf *pf = vsi->back;
4923         int err;
4924
4925         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4926                 i40e_vsi_configure_msix(vsi);
4927         else
4928                 i40e_configure_msi_and_legacy(vsi);
4929
4930         /* start rings */
4931         err = i40e_vsi_control_rings(vsi, true);
4932         if (err)
4933                 return err;
4934
4935         clear_bit(__I40E_DOWN, &vsi->state);
4936         i40e_napi_enable_all(vsi);
4937         i40e_vsi_enable_irq(vsi);
4938
4939         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4940             (vsi->netdev)) {
4941                 i40e_print_link_message(vsi, true);
4942                 netif_tx_start_all_queues(vsi->netdev);
4943                 netif_carrier_on(vsi->netdev);
4944         } else if (vsi->netdev) {
4945                 i40e_print_link_message(vsi, false);
4946                 /* need to check for qualified module here*/
4947                 if ((pf->hw.phy.link_info.link_info &
4948                         I40E_AQ_MEDIA_AVAILABLE) &&
4949                     (!(pf->hw.phy.link_info.an_info &
4950                         I40E_AQ_QUALIFIED_MODULE)))
4951                         netdev_err(vsi->netdev,
4952                                    "the driver failed to link because an unqualified module was detected.");
4953         }
4954
4955         /* replay FDIR SB filters */
4956         if (vsi->type == I40E_VSI_FDIR) {
4957                 /* reset fd counters */
4958                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4959                 if (pf->fd_tcp_rule > 0) {
4960                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4961                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4962                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4963                         pf->fd_tcp_rule = 0;
4964                 }
4965                 i40e_fdir_filter_restore(vsi);
4966         }
4967         i40e_service_event_schedule(pf);
4968
4969         return 0;
4970 }
4971
4972 /**
4973  * i40e_vsi_reinit_locked - Reset the VSI
4974  * @vsi: the VSI being configured
4975  *
4976  * Rebuild the ring structs after some configuration
4977  * has changed, e.g. MTU size.
4978  **/
4979 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4980 {
4981         struct i40e_pf *pf = vsi->back;
4982
4983         WARN_ON(in_interrupt());
4984         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4985                 usleep_range(1000, 2000);
4986         i40e_down(vsi);
4987
4988         /* Give a VF some time to respond to the reset.  The
4989          * two second wait is based upon the watchdog cycle in
4990          * the VF driver.
4991          */
4992         if (vsi->type == I40E_VSI_SRIOV)
4993                 msleep(2000);
4994         i40e_up(vsi);
4995         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4996 }
4997
4998 /**
4999  * i40e_up - Bring the connection back up after being down
5000  * @vsi: the VSI being configured
5001  **/
5002 int i40e_up(struct i40e_vsi *vsi)
5003 {
5004         int err;
5005
5006         err = i40e_vsi_configure(vsi);
5007         if (!err)
5008                 err = i40e_up_complete(vsi);
5009
5010         return err;
5011 }
5012
5013 /**
5014  * i40e_down - Shutdown the connection processing
5015  * @vsi: the VSI being stopped
5016  **/
5017 void i40e_down(struct i40e_vsi *vsi)
5018 {
5019         int i;
5020
5021         /* It is assumed that the caller of this function
5022          * sets the vsi->state __I40E_DOWN bit.
5023          */
5024         if (vsi->netdev) {
5025                 netif_carrier_off(vsi->netdev);
5026                 netif_tx_disable(vsi->netdev);
5027         }
5028         i40e_vsi_disable_irq(vsi);
5029         i40e_vsi_control_rings(vsi, false);
5030         i40e_napi_disable_all(vsi);
5031
5032         for (i = 0; i < vsi->num_queue_pairs; i++) {
5033                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5034                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5035         }
5036 }
5037
5038 /**
5039  * i40e_setup_tc - configure multiple traffic classes
5040  * @netdev: net device to configure
5041  * @tc: number of traffic classes to enable
5042  **/
5043 #ifdef I40E_FCOE
5044 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5045 #else
5046 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5047 #endif
5048 {
5049         struct i40e_netdev_priv *np = netdev_priv(netdev);
5050         struct i40e_vsi *vsi = np->vsi;
5051         struct i40e_pf *pf = vsi->back;
5052         u8 enabled_tc = 0;
5053         int ret = -EINVAL;
5054         int i;
5055
5056         /* Check if DCB enabled to continue */
5057         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5058                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5059                 goto exit;
5060         }
5061
5062         /* Check if MFP enabled */
5063         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5064                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5065                 goto exit;
5066         }
5067
5068         /* Check whether tc count is within enabled limit */
5069         if (tc > i40e_pf_get_num_tc(pf)) {
5070                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5071                 goto exit;
5072         }
5073
5074         /* Generate TC map for number of tc requested */
5075         for (i = 0; i < tc; i++)
5076                 enabled_tc |= BIT_ULL(i);
5077
5078         /* Requesting same TC configuration as already enabled */
5079         if (enabled_tc == vsi->tc_config.enabled_tc)
5080                 return 0;
5081
5082         /* Quiesce VSI queues */
5083         i40e_quiesce_vsi(vsi);
5084
5085         /* Configure VSI for enabled TCs */
5086         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5087         if (ret) {
5088                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5089                             vsi->seid);
5090                 goto exit;
5091         }
5092
5093         /* Unquiesce VSI */
5094         i40e_unquiesce_vsi(vsi);
5095
5096 exit:
5097         return ret;
5098 }
5099
5100 /**
5101  * i40e_open - Called when a network interface is made active
5102  * @netdev: network interface device structure
5103  *
5104  * The open entry point is called when a network interface is made
5105  * active by the system (IFF_UP).  At this point all resources needed
5106  * for transmit and receive operations are allocated, the interrupt
5107  * handler is registered with the OS, the netdev watchdog subtask is
5108  * enabled, and the stack is notified that the interface is ready.
5109  *
5110  * Returns 0 on success, negative value on failure
5111  **/
5112 int i40e_open(struct net_device *netdev)
5113 {
5114         struct i40e_netdev_priv *np = netdev_priv(netdev);
5115         struct i40e_vsi *vsi = np->vsi;
5116         struct i40e_pf *pf = vsi->back;
5117         int err;
5118
5119         /* disallow open during test or if eeprom is broken */
5120         if (test_bit(__I40E_TESTING, &pf->state) ||
5121             test_bit(__I40E_BAD_EEPROM, &pf->state))
5122                 return -EBUSY;
5123
5124         netif_carrier_off(netdev);
5125
5126         err = i40e_vsi_open(vsi);
5127         if (err)
5128                 return err;
5129
5130         /* configure global TSO hardware offload settings */
5131         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5132                                                        TCP_FLAG_FIN) >> 16);
5133         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5134                                                        TCP_FLAG_FIN |
5135                                                        TCP_FLAG_CWR) >> 16);
5136         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5137
5138 #ifdef CONFIG_I40E_VXLAN
5139         vxlan_get_rx_port(netdev);
5140 #endif
5141
5142         return 0;
5143 }
5144
5145 /**
5146  * i40e_vsi_open -
5147  * @vsi: the VSI to open
5148  *
5149  * Finish initialization of the VSI.
5150  *
5151  * Returns 0 on success, negative value on failure
5152  **/
5153 int i40e_vsi_open(struct i40e_vsi *vsi)
5154 {
5155         struct i40e_pf *pf = vsi->back;
5156         char int_name[I40E_INT_NAME_STR_LEN];
5157         int err;
5158
5159         /* allocate descriptors */
5160         err = i40e_vsi_setup_tx_resources(vsi);
5161         if (err)
5162                 goto err_setup_tx;
5163         err = i40e_vsi_setup_rx_resources(vsi);
5164         if (err)
5165                 goto err_setup_rx;
5166
5167         err = i40e_vsi_configure(vsi);
5168         if (err)
5169                 goto err_setup_rx;
5170
5171         if (vsi->netdev) {
5172                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5173                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5174                 err = i40e_vsi_request_irq(vsi, int_name);
5175                 if (err)
5176                         goto err_setup_rx;
5177
5178                 /* Notify the stack of the actual queue counts. */
5179                 err = netif_set_real_num_tx_queues(vsi->netdev,
5180                                                    vsi->num_queue_pairs);
5181                 if (err)
5182                         goto err_set_queues;
5183
5184                 err = netif_set_real_num_rx_queues(vsi->netdev,
5185                                                    vsi->num_queue_pairs);
5186                 if (err)
5187                         goto err_set_queues;
5188
5189         } else if (vsi->type == I40E_VSI_FDIR) {
5190                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5191                          dev_driver_string(&pf->pdev->dev),
5192                          dev_name(&pf->pdev->dev));
5193                 err = i40e_vsi_request_irq(vsi, int_name);
5194
5195         } else {
5196                 err = -EINVAL;
5197                 goto err_setup_rx;
5198         }
5199
5200         err = i40e_up_complete(vsi);
5201         if (err)
5202                 goto err_up_complete;
5203
5204         return 0;
5205
5206 err_up_complete:
5207         i40e_down(vsi);
5208 err_set_queues:
5209         i40e_vsi_free_irq(vsi);
5210 err_setup_rx:
5211         i40e_vsi_free_rx_resources(vsi);
5212 err_setup_tx:
5213         i40e_vsi_free_tx_resources(vsi);
5214         if (vsi == pf->vsi[pf->lan_vsi])
5215                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5216
5217         return err;
5218 }
5219
5220 /**
5221  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5222  * @pf: Pointer to PF
5223  *
5224  * This function destroys the hlist where all the Flow Director
5225  * filters were saved.
5226  **/
5227 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5228 {
5229         struct i40e_fdir_filter *filter;
5230         struct hlist_node *node2;
5231
5232         hlist_for_each_entry_safe(filter, node2,
5233                                   &pf->fdir_filter_list, fdir_node) {
5234                 hlist_del(&filter->fdir_node);
5235                 kfree(filter);
5236         }
5237         pf->fdir_pf_active_filters = 0;
5238 }
5239
5240 /**
5241  * i40e_close - Disables a network interface
5242  * @netdev: network interface device structure
5243  *
5244  * The close entry point is called when an interface is de-activated
5245  * by the OS.  The hardware is still under the driver's control, but
5246  * this netdev interface is disabled.
5247  *
5248  * Returns 0, this is not allowed to fail
5249  **/
5250 #ifdef I40E_FCOE
5251 int i40e_close(struct net_device *netdev)
5252 #else
5253 static int i40e_close(struct net_device *netdev)
5254 #endif
5255 {
5256         struct i40e_netdev_priv *np = netdev_priv(netdev);
5257         struct i40e_vsi *vsi = np->vsi;
5258
5259         i40e_vsi_close(vsi);
5260
5261         return 0;
5262 }
5263
5264 /**
5265  * i40e_do_reset - Start a PF or Core Reset sequence
5266  * @pf: board private structure
5267  * @reset_flags: which reset is requested
5268  *
5269  * The essential difference in resets is that the PF Reset
5270  * doesn't clear the packet buffers, doesn't reset the PE
5271  * firmware, and doesn't bother the other PFs on the chip.
5272  **/
5273 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5274 {
5275         u32 val;
5276
5277         WARN_ON(in_interrupt());
5278
5279         if (i40e_check_asq_alive(&pf->hw))
5280                 i40e_vc_notify_reset(pf);
5281
5282         /* do the biggest reset indicated */
5283         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5284
5285                 /* Request a Global Reset
5286                  *
5287                  * This will start the chip's countdown to the actual full
5288                  * chip reset event, and a warning interrupt to be sent
5289                  * to all PFs, including the requestor.  Our handler
5290                  * for the warning interrupt will deal with the shutdown
5291                  * and recovery of the switch setup.
5292                  */
5293                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5294                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5295                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5296                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5297
5298         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5299
5300                 /* Request a Core Reset
5301                  *
5302                  * Same as Global Reset, except does *not* include the MAC/PHY
5303                  */
5304                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5305                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5306                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5307                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5308                 i40e_flush(&pf->hw);
5309
5310         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5311
5312                 /* Request a PF Reset
5313                  *
5314                  * Resets only the PF-specific registers
5315                  *
5316                  * This goes directly to the tear-down and rebuild of
5317                  * the switch, since we need to do all the recovery as
5318                  * for the Core Reset.
5319                  */
5320                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5321                 i40e_handle_reset_warning(pf);
5322
5323         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5324                 int v;
5325
5326                 /* Find the VSI(s) that requested a re-init */
5327                 dev_info(&pf->pdev->dev,
5328                          "VSI reinit requested\n");
5329                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5330                         struct i40e_vsi *vsi = pf->vsi[v];
5331                         if (vsi != NULL &&
5332                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5333                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5334                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5335                         }
5336                 }
5337
5338                 /* no further action needed, so return now */
5339                 return;
5340         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5341                 int v;
5342
5343                 /* Find the VSI(s) that needs to be brought down */
5344                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5345                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5346                         struct i40e_vsi *vsi = pf->vsi[v];
5347                         if (vsi != NULL &&
5348                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5349                                 set_bit(__I40E_DOWN, &vsi->state);
5350                                 i40e_down(vsi);
5351                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5352                         }
5353                 }
5354
5355                 /* no further action needed, so return now */
5356                 return;
5357         } else {
5358                 dev_info(&pf->pdev->dev,
5359                          "bad reset request 0x%08x\n", reset_flags);
5360                 return;
5361         }
5362 }
5363
5364 #ifdef CONFIG_I40E_DCB
5365 /**
5366  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5367  * @pf: board private structure
5368  * @old_cfg: current DCB config
5369  * @new_cfg: new DCB config
5370  **/
5371 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5372                             struct i40e_dcbx_config *old_cfg,
5373                             struct i40e_dcbx_config *new_cfg)
5374 {
5375         bool need_reconfig = false;
5376
5377         /* Check if ETS configuration has changed */
5378         if (memcmp(&new_cfg->etscfg,
5379                    &old_cfg->etscfg,
5380                    sizeof(new_cfg->etscfg))) {
5381                 /* If Priority Table has changed reconfig is needed */
5382                 if (memcmp(&new_cfg->etscfg.prioritytable,
5383                            &old_cfg->etscfg.prioritytable,
5384                            sizeof(new_cfg->etscfg.prioritytable))) {
5385                         need_reconfig = true;
5386                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5387                 }
5388
5389                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5390                            &old_cfg->etscfg.tcbwtable,
5391                            sizeof(new_cfg->etscfg.tcbwtable)))
5392                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5393
5394                 if (memcmp(&new_cfg->etscfg.tsatable,
5395                            &old_cfg->etscfg.tsatable,
5396                            sizeof(new_cfg->etscfg.tsatable)))
5397                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5398         }
5399
5400         /* Check if PFC configuration has changed */
5401         if (memcmp(&new_cfg->pfc,
5402                    &old_cfg->pfc,
5403                    sizeof(new_cfg->pfc))) {
5404                 need_reconfig = true;
5405                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5406         }
5407
5408         /* Check if APP Table has changed */
5409         if (memcmp(&new_cfg->app,
5410                    &old_cfg->app,
5411                    sizeof(new_cfg->app))) {
5412                 need_reconfig = true;
5413                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5414         }
5415
5416         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5417         return need_reconfig;
5418 }
5419
5420 /**
5421  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5422  * @pf: board private structure
5423  * @e: event info posted on ARQ
5424  **/
5425 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5426                                   struct i40e_arq_event_info *e)
5427 {
5428         struct i40e_aqc_lldp_get_mib *mib =
5429                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5430         struct i40e_hw *hw = &pf->hw;
5431         struct i40e_dcbx_config tmp_dcbx_cfg;
5432         bool need_reconfig = false;
5433         int ret = 0;
5434         u8 type;
5435
5436         /* Not DCB capable or capability disabled */
5437         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5438                 return ret;
5439
5440         /* Ignore if event is not for Nearest Bridge */
5441         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5442                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5443         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5444         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5445                 return ret;
5446
5447         /* Check MIB Type and return if event for Remote MIB update */
5448         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5449         dev_dbg(&pf->pdev->dev,
5450                 "LLDP event mib type %s\n", type ? "remote" : "local");
5451         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5452                 /* Update the remote cached instance and return */
5453                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5454                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5455                                 &hw->remote_dcbx_config);
5456                 goto exit;
5457         }
5458
5459         /* Store the old configuration */
5460         tmp_dcbx_cfg = hw->local_dcbx_config;
5461
5462         /* Reset the old DCBx configuration data */
5463         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5464         /* Get updated DCBX data from firmware */
5465         ret = i40e_get_dcb_config(&pf->hw);
5466         if (ret) {
5467                 dev_info(&pf->pdev->dev,
5468                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5469                          i40e_stat_str(&pf->hw, ret),
5470                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5471                 goto exit;
5472         }
5473
5474         /* No change detected in DCBX configs */
5475         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5476                     sizeof(tmp_dcbx_cfg))) {
5477                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5478                 goto exit;
5479         }
5480
5481         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5482                                                &hw->local_dcbx_config);
5483
5484         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5485
5486         if (!need_reconfig)
5487                 goto exit;
5488
5489         /* Enable DCB tagging only when more than one TC */
5490         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5491                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5492         else
5493                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5494
5495         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5496         /* Reconfiguration needed quiesce all VSIs */
5497         i40e_pf_quiesce_all_vsi(pf);
5498
5499         /* Changes in configuration update VEB/VSI */
5500         i40e_dcb_reconfigure(pf);
5501
5502         ret = i40e_resume_port_tx(pf);
5503
5504         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5505         /* In case of error no point in resuming VSIs */
5506         if (ret)
5507                 goto exit;
5508
5509         /* Wait for the PF's Tx queues to be disabled */
5510         ret = i40e_pf_wait_txq_disabled(pf);
5511         if (ret) {
5512                 /* Schedule PF reset to recover */
5513                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5514                 i40e_service_event_schedule(pf);
5515         } else {
5516                 i40e_pf_unquiesce_all_vsi(pf);
5517         }
5518
5519 exit:
5520         return ret;
5521 }
5522 #endif /* CONFIG_I40E_DCB */
5523
5524 /**
5525  * i40e_do_reset_safe - Protected reset path for userland calls.
5526  * @pf: board private structure
5527  * @reset_flags: which reset is requested
5528  *
5529  **/
5530 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5531 {
5532         rtnl_lock();
5533         i40e_do_reset(pf, reset_flags);
5534         rtnl_unlock();
5535 }
5536
5537 /**
5538  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5539  * @pf: board private structure
5540  * @e: event info posted on ARQ
5541  *
5542  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5543  * and VF queues
5544  **/
5545 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5546                                            struct i40e_arq_event_info *e)
5547 {
5548         struct i40e_aqc_lan_overflow *data =
5549                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5550         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5551         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5552         struct i40e_hw *hw = &pf->hw;
5553         struct i40e_vf *vf;
5554         u16 vf_id;
5555
5556         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5557                 queue, qtx_ctl);
5558
5559         /* Queue belongs to VF, find the VF and issue VF reset */
5560         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5561             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5562                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5563                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5564                 vf_id -= hw->func_caps.vf_base_id;
5565                 vf = &pf->vf[vf_id];
5566                 i40e_vc_notify_vf_reset(vf);
5567                 /* Allow VF to process pending reset notification */
5568                 msleep(20);
5569                 i40e_reset_vf(vf, false);
5570         }
5571 }
5572
5573 /**
5574  * i40e_service_event_complete - Finish up the service event
5575  * @pf: board private structure
5576  **/
5577 static void i40e_service_event_complete(struct i40e_pf *pf)
5578 {
5579         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5580
5581         /* flush memory to make sure state is correct before next watchog */
5582         smp_mb__before_atomic();
5583         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5584 }
5585
5586 /**
5587  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5588  * @pf: board private structure
5589  **/
5590 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5591 {
5592         u32 val, fcnt_prog;
5593
5594         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5595         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5596         return fcnt_prog;
5597 }
5598
5599 /**
5600  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5601  * @pf: board private structure
5602  **/
5603 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5604 {
5605         u32 val, fcnt_prog;
5606
5607         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5608         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5609                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5610                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5611         return fcnt_prog;
5612 }
5613
5614 /**
5615  * i40e_get_global_fd_count - Get total FD filters programmed on device
5616  * @pf: board private structure
5617  **/
5618 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5619 {
5620         u32 val, fcnt_prog;
5621
5622         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5623         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5624                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5625                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5626         return fcnt_prog;
5627 }
5628
5629 /**
5630  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5631  * @pf: board private structure
5632  **/
5633 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5634 {
5635         u32 fcnt_prog, fcnt_avail;
5636
5637         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5638                 return;
5639
5640         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5641          * to re-enable
5642          */
5643         fcnt_prog = i40e_get_global_fd_count(pf);
5644         fcnt_avail = pf->fdir_pf_filter_count;
5645         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5646             (pf->fd_add_err == 0) ||
5647             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5648                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5649                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5650                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5651                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5652                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5653                 }
5654         }
5655         /* Wait for some more space to be available to turn on ATR */
5656         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5657                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5658                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5659                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5660                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5661                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5662                 }
5663         }
5664 }
5665
5666 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5667 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5668 /**
5669  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5670  * @pf: board private structure
5671  **/
5672 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5673 {
5674         unsigned long min_flush_time;
5675         int flush_wait_retry = 50;
5676         bool disable_atr = false;
5677         int fd_room;
5678         int reg;
5679
5680         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5681                 return;
5682
5683         if (time_after(jiffies, pf->fd_flush_timestamp +
5684                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5685                 /* If the flush is happening too quick and we have mostly
5686                  * SB rules we should not re-enable ATR for some time.
5687                  */
5688                 min_flush_time = pf->fd_flush_timestamp
5689                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5690                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5691
5692                 if (!(time_after(jiffies, min_flush_time)) &&
5693                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5694                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5695                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5696                         disable_atr = true;
5697                 }
5698
5699                 pf->fd_flush_timestamp = jiffies;
5700                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5701                 /* flush all filters */
5702                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5703                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5704                 i40e_flush(&pf->hw);
5705                 pf->fd_flush_cnt++;
5706                 pf->fd_add_err = 0;
5707                 do {
5708                         /* Check FD flush status every 5-6msec */
5709                         usleep_range(5000, 6000);
5710                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5711                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5712                                 break;
5713                 } while (flush_wait_retry--);
5714                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5715                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5716                 } else {
5717                         /* replay sideband filters */
5718                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5719                         if (!disable_atr)
5720                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5721                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5722                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5723                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5724                 }
5725         }
5726 }
5727
5728 /**
5729  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5730  * @pf: board private structure
5731  **/
5732 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5733 {
5734         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5735 }
5736
5737 /* We can see up to 256 filter programming desc in transit if the filters are
5738  * being applied really fast; before we see the first
5739  * filter miss error on Rx queue 0. Accumulating enough error messages before
5740  * reacting will make sure we don't cause flush too often.
5741  */
5742 #define I40E_MAX_FD_PROGRAM_ERROR 256
5743
5744 /**
5745  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5746  * @pf: board private structure
5747  **/
5748 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5749 {
5750
5751         /* if interface is down do nothing */
5752         if (test_bit(__I40E_DOWN, &pf->state))
5753                 return;
5754
5755         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5756                 return;
5757
5758         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5759                 i40e_fdir_flush_and_replay(pf);
5760
5761         i40e_fdir_check_and_reenable(pf);
5762
5763 }
5764
5765 /**
5766  * i40e_vsi_link_event - notify VSI of a link event
5767  * @vsi: vsi to be notified
5768  * @link_up: link up or down
5769  **/
5770 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5771 {
5772         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5773                 return;
5774
5775         switch (vsi->type) {
5776         case I40E_VSI_MAIN:
5777 #ifdef I40E_FCOE
5778         case I40E_VSI_FCOE:
5779 #endif
5780                 if (!vsi->netdev || !vsi->netdev_registered)
5781                         break;
5782
5783                 if (link_up) {
5784                         netif_carrier_on(vsi->netdev);
5785                         netif_tx_wake_all_queues(vsi->netdev);
5786                 } else {
5787                         netif_carrier_off(vsi->netdev);
5788                         netif_tx_stop_all_queues(vsi->netdev);
5789                 }
5790                 break;
5791
5792         case I40E_VSI_SRIOV:
5793         case I40E_VSI_VMDQ2:
5794         case I40E_VSI_CTRL:
5795         case I40E_VSI_MIRROR:
5796         default:
5797                 /* there is no notification for other VSIs */
5798                 break;
5799         }
5800 }
5801
5802 /**
5803  * i40e_veb_link_event - notify elements on the veb of a link event
5804  * @veb: veb to be notified
5805  * @link_up: link up or down
5806  **/
5807 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5808 {
5809         struct i40e_pf *pf;
5810         int i;
5811
5812         if (!veb || !veb->pf)
5813                 return;
5814         pf = veb->pf;
5815
5816         /* depth first... */
5817         for (i = 0; i < I40E_MAX_VEB; i++)
5818                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5819                         i40e_veb_link_event(pf->veb[i], link_up);
5820
5821         /* ... now the local VSIs */
5822         for (i = 0; i < pf->num_alloc_vsi; i++)
5823                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5824                         i40e_vsi_link_event(pf->vsi[i], link_up);
5825 }
5826
5827 /**
5828  * i40e_link_event - Update netif_carrier status
5829  * @pf: board private structure
5830  **/
5831 static void i40e_link_event(struct i40e_pf *pf)
5832 {
5833         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5834         u8 new_link_speed, old_link_speed;
5835         i40e_status status;
5836         bool new_link, old_link;
5837
5838         /* set this to force the get_link_status call to refresh state */
5839         pf->hw.phy.get_link_info = true;
5840
5841         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5842
5843         status = i40e_get_link_status(&pf->hw, &new_link);
5844         if (status) {
5845                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
5846                         status);
5847                 return;
5848         }
5849
5850         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5851         new_link_speed = pf->hw.phy.link_info.link_speed;
5852
5853         if (new_link == old_link &&
5854             new_link_speed == old_link_speed &&
5855             (test_bit(__I40E_DOWN, &vsi->state) ||
5856              new_link == netif_carrier_ok(vsi->netdev)))
5857                 return;
5858
5859         if (!test_bit(__I40E_DOWN, &vsi->state))
5860                 i40e_print_link_message(vsi, new_link);
5861
5862         /* Notify the base of the switch tree connected to
5863          * the link.  Floating VEBs are not notified.
5864          */
5865         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5866                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5867         else
5868                 i40e_vsi_link_event(vsi, new_link);
5869
5870         if (pf->vf)
5871                 i40e_vc_notify_link_state(pf);
5872
5873         if (pf->flags & I40E_FLAG_PTP)
5874                 i40e_ptp_set_increment(pf);
5875 }
5876
5877 /**
5878  * i40e_watchdog_subtask - periodic checks not using event driven response
5879  * @pf: board private structure
5880  **/
5881 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5882 {
5883         int i;
5884
5885         /* if interface is down do nothing */
5886         if (test_bit(__I40E_DOWN, &pf->state) ||
5887             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5888                 return;
5889
5890         /* make sure we don't do these things too often */
5891         if (time_before(jiffies, (pf->service_timer_previous +
5892                                   pf->service_timer_period)))
5893                 return;
5894         pf->service_timer_previous = jiffies;
5895
5896         i40e_link_event(pf);
5897
5898         /* Update the stats for active netdevs so the network stack
5899          * can look at updated numbers whenever it cares to
5900          */
5901         for (i = 0; i < pf->num_alloc_vsi; i++)
5902                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5903                         i40e_update_stats(pf->vsi[i]);
5904
5905         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
5906                 /* Update the stats for the active switching components */
5907                 for (i = 0; i < I40E_MAX_VEB; i++)
5908                         if (pf->veb[i])
5909                                 i40e_update_veb_stats(pf->veb[i]);
5910         }
5911
5912         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5913 }
5914
5915 /**
5916  * i40e_reset_subtask - Set up for resetting the device and driver
5917  * @pf: board private structure
5918  **/
5919 static void i40e_reset_subtask(struct i40e_pf *pf)
5920 {
5921         u32 reset_flags = 0;
5922
5923         rtnl_lock();
5924         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5925                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5926                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5927         }
5928         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5929                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5930                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5931         }
5932         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5933                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5934                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5935         }
5936         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5937                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5938                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5939         }
5940         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5941                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5942                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5943         }
5944
5945         /* If there's a recovery already waiting, it takes
5946          * precedence before starting a new reset sequence.
5947          */
5948         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5949                 i40e_handle_reset_warning(pf);
5950                 goto unlock;
5951         }
5952
5953         /* If we're already down or resetting, just bail */
5954         if (reset_flags &&
5955             !test_bit(__I40E_DOWN, &pf->state) &&
5956             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5957                 i40e_do_reset(pf, reset_flags);
5958
5959 unlock:
5960         rtnl_unlock();
5961 }
5962
5963 /**
5964  * i40e_handle_link_event - Handle link event
5965  * @pf: board private structure
5966  * @e: event info posted on ARQ
5967  **/
5968 static void i40e_handle_link_event(struct i40e_pf *pf,
5969                                    struct i40e_arq_event_info *e)
5970 {
5971         struct i40e_hw *hw = &pf->hw;
5972         struct i40e_aqc_get_link_status *status =
5973                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5974
5975         /* save off old link status information */
5976         hw->phy.link_info_old = hw->phy.link_info;
5977
5978         /* Do a new status request to re-enable LSE reporting
5979          * and load new status information into the hw struct
5980          * This completely ignores any state information
5981          * in the ARQ event info, instead choosing to always
5982          * issue the AQ update link status command.
5983          */
5984         i40e_link_event(pf);
5985
5986         /* check for unqualified module, if link is down */
5987         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5988             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5989             (!(status->link_info & I40E_AQ_LINK_UP)))
5990                 dev_err(&pf->pdev->dev,
5991                         "The driver failed to link because an unqualified module was detected.\n");
5992 }
5993
5994 /**
5995  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5996  * @pf: board private structure
5997  **/
5998 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5999 {
6000         struct i40e_arq_event_info event;
6001         struct i40e_hw *hw = &pf->hw;
6002         u16 pending, i = 0;
6003         i40e_status ret;
6004         u16 opcode;
6005         u32 oldval;
6006         u32 val;
6007
6008         /* Do not run clean AQ when PF reset fails */
6009         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6010                 return;
6011
6012         /* check for error indications */
6013         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6014         oldval = val;
6015         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6016                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6017                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6018         }
6019         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6020                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6021                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6022         }
6023         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6024                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6025                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6026         }
6027         if (oldval != val)
6028                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6029
6030         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6031         oldval = val;
6032         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6033                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6034                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6035         }
6036         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6037                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6038                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6039         }
6040         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6041                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6042                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6043         }
6044         if (oldval != val)
6045                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6046
6047         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6048         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6049         if (!event.msg_buf)
6050                 return;
6051
6052         do {
6053                 ret = i40e_clean_arq_element(hw, &event, &pending);
6054                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6055                         break;
6056                 else if (ret) {
6057                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6058                         break;
6059                 }
6060
6061                 opcode = le16_to_cpu(event.desc.opcode);
6062                 switch (opcode) {
6063
6064                 case i40e_aqc_opc_get_link_status:
6065                         i40e_handle_link_event(pf, &event);
6066                         break;
6067                 case i40e_aqc_opc_send_msg_to_pf:
6068                         ret = i40e_vc_process_vf_msg(pf,
6069                                         le16_to_cpu(event.desc.retval),
6070                                         le32_to_cpu(event.desc.cookie_high),
6071                                         le32_to_cpu(event.desc.cookie_low),
6072                                         event.msg_buf,
6073                                         event.msg_len);
6074                         break;
6075                 case i40e_aqc_opc_lldp_update_mib:
6076                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6077 #ifdef CONFIG_I40E_DCB
6078                         rtnl_lock();
6079                         ret = i40e_handle_lldp_event(pf, &event);
6080                         rtnl_unlock();
6081 #endif /* CONFIG_I40E_DCB */
6082                         break;
6083                 case i40e_aqc_opc_event_lan_overflow:
6084                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6085                         i40e_handle_lan_overflow_event(pf, &event);
6086                         break;
6087                 case i40e_aqc_opc_send_msg_to_peer:
6088                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6089                         break;
6090                 case i40e_aqc_opc_nvm_erase:
6091                 case i40e_aqc_opc_nvm_update:
6092                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6093                         break;
6094                 default:
6095                         dev_info(&pf->pdev->dev,
6096                                  "ARQ Error: Unknown event 0x%04x received\n",
6097                                  opcode);
6098                         break;
6099                 }
6100         } while (pending && (i++ < pf->adminq_work_limit));
6101
6102         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6103         /* re-enable Admin queue interrupt cause */
6104         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6105         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6106         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6107         i40e_flush(hw);
6108
6109         kfree(event.msg_buf);
6110 }
6111
6112 /**
6113  * i40e_verify_eeprom - make sure eeprom is good to use
6114  * @pf: board private structure
6115  **/
6116 static void i40e_verify_eeprom(struct i40e_pf *pf)
6117 {
6118         int err;
6119
6120         err = i40e_diag_eeprom_test(&pf->hw);
6121         if (err) {
6122                 /* retry in case of garbage read */
6123                 err = i40e_diag_eeprom_test(&pf->hw);
6124                 if (err) {
6125                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6126                                  err);
6127                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6128                 }
6129         }
6130
6131         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6132                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6133                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6134         }
6135 }
6136
6137 /**
6138  * i40e_enable_pf_switch_lb
6139  * @pf: pointer to the PF structure
6140  *
6141  * enable switch loop back or die - no point in a return value
6142  **/
6143 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6144 {
6145         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6146         struct i40e_vsi_context ctxt;
6147         int ret;
6148
6149         ctxt.seid = pf->main_vsi_seid;
6150         ctxt.pf_num = pf->hw.pf_id;
6151         ctxt.vf_num = 0;
6152         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6153         if (ret) {
6154                 dev_info(&pf->pdev->dev,
6155                          "couldn't get PF vsi config, err %s aq_err %s\n",
6156                          i40e_stat_str(&pf->hw, ret),
6157                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6158                 return;
6159         }
6160         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6161         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6162         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6163
6164         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6165         if (ret) {
6166                 dev_info(&pf->pdev->dev,
6167                          "update vsi switch failed, err %s aq_err %s\n",
6168                          i40e_stat_str(&pf->hw, ret),
6169                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6170         }
6171 }
6172
6173 /**
6174  * i40e_disable_pf_switch_lb
6175  * @pf: pointer to the PF structure
6176  *
6177  * disable switch loop back or die - no point in a return value
6178  **/
6179 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6180 {
6181         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6182         struct i40e_vsi_context ctxt;
6183         int ret;
6184
6185         ctxt.seid = pf->main_vsi_seid;
6186         ctxt.pf_num = pf->hw.pf_id;
6187         ctxt.vf_num = 0;
6188         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6189         if (ret) {
6190                 dev_info(&pf->pdev->dev,
6191                          "couldn't get PF vsi config, err %s aq_err %s\n",
6192                          i40e_stat_str(&pf->hw, ret),
6193                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6194                 return;
6195         }
6196         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6197         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6198         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6199
6200         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6201         if (ret) {
6202                 dev_info(&pf->pdev->dev,
6203                          "update vsi switch failed, err %s aq_err %s\n",
6204                          i40e_stat_str(&pf->hw, ret),
6205                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6206         }
6207 }
6208
6209 /**
6210  * i40e_config_bridge_mode - Configure the HW bridge mode
6211  * @veb: pointer to the bridge instance
6212  *
6213  * Configure the loop back mode for the LAN VSI that is downlink to the
6214  * specified HW bridge instance. It is expected this function is called
6215  * when a new HW bridge is instantiated.
6216  **/
6217 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6218 {
6219         struct i40e_pf *pf = veb->pf;
6220
6221         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6222                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6223         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6224                 i40e_disable_pf_switch_lb(pf);
6225         else
6226                 i40e_enable_pf_switch_lb(pf);
6227 }
6228
6229 /**
6230  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6231  * @veb: pointer to the VEB instance
6232  *
6233  * This is a recursive function that first builds the attached VSIs then
6234  * recurses in to build the next layer of VEB.  We track the connections
6235  * through our own index numbers because the seid's from the HW could
6236  * change across the reset.
6237  **/
6238 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6239 {
6240         struct i40e_vsi *ctl_vsi = NULL;
6241         struct i40e_pf *pf = veb->pf;
6242         int v, veb_idx;
6243         int ret;
6244
6245         /* build VSI that owns this VEB, temporarily attached to base VEB */
6246         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6247                 if (pf->vsi[v] &&
6248                     pf->vsi[v]->veb_idx == veb->idx &&
6249                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6250                         ctl_vsi = pf->vsi[v];
6251                         break;
6252                 }
6253         }
6254         if (!ctl_vsi) {
6255                 dev_info(&pf->pdev->dev,
6256                          "missing owner VSI for veb_idx %d\n", veb->idx);
6257                 ret = -ENOENT;
6258                 goto end_reconstitute;
6259         }
6260         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6261                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6262         ret = i40e_add_vsi(ctl_vsi);
6263         if (ret) {
6264                 dev_info(&pf->pdev->dev,
6265                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6266                          veb->idx, ret);
6267                 goto end_reconstitute;
6268         }
6269         i40e_vsi_reset_stats(ctl_vsi);
6270
6271         /* create the VEB in the switch and move the VSI onto the VEB */
6272         ret = i40e_add_veb(veb, ctl_vsi);
6273         if (ret)
6274                 goto end_reconstitute;
6275
6276         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6277                 veb->bridge_mode = BRIDGE_MODE_VEB;
6278         else
6279                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6280         i40e_config_bridge_mode(veb);
6281
6282         /* create the remaining VSIs attached to this VEB */
6283         for (v = 0; v < pf->num_alloc_vsi; v++) {
6284                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6285                         continue;
6286
6287                 if (pf->vsi[v]->veb_idx == veb->idx) {
6288                         struct i40e_vsi *vsi = pf->vsi[v];
6289                         vsi->uplink_seid = veb->seid;
6290                         ret = i40e_add_vsi(vsi);
6291                         if (ret) {
6292                                 dev_info(&pf->pdev->dev,
6293                                          "rebuild of vsi_idx %d failed: %d\n",
6294                                          v, ret);
6295                                 goto end_reconstitute;
6296                         }
6297                         i40e_vsi_reset_stats(vsi);
6298                 }
6299         }
6300
6301         /* create any VEBs attached to this VEB - RECURSION */
6302         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6303                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6304                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6305                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6306                         if (ret)
6307                                 break;
6308                 }
6309         }
6310
6311 end_reconstitute:
6312         return ret;
6313 }
6314
6315 /**
6316  * i40e_get_capabilities - get info about the HW
6317  * @pf: the PF struct
6318  **/
6319 static int i40e_get_capabilities(struct i40e_pf *pf)
6320 {
6321         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6322         u16 data_size;
6323         int buf_len;
6324         int err;
6325
6326         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6327         do {
6328                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6329                 if (!cap_buf)
6330                         return -ENOMEM;
6331
6332                 /* this loads the data into the hw struct for us */
6333                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6334                                             &data_size,
6335                                             i40e_aqc_opc_list_func_capabilities,
6336                                             NULL);
6337                 /* data loaded, buffer no longer needed */
6338                 kfree(cap_buf);
6339
6340                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6341                         /* retry with a larger buffer */
6342                         buf_len = data_size;
6343                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6344                         dev_info(&pf->pdev->dev,
6345                                  "capability discovery failed, err %s aq_err %s\n",
6346                                  i40e_stat_str(&pf->hw, err),
6347                                  i40e_aq_str(&pf->hw,
6348                                              pf->hw.aq.asq_last_status));
6349                         return -ENODEV;
6350                 }
6351         } while (err);
6352
6353         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6354             (pf->hw.aq.fw_maj_ver < 2)) {
6355                 pf->hw.func_caps.num_msix_vectors++;
6356                 pf->hw.func_caps.num_msix_vectors_vf++;
6357         }
6358
6359         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6360                 dev_info(&pf->pdev->dev,
6361                          "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
6362                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6363                          pf->hw.func_caps.num_msix_vectors,
6364                          pf->hw.func_caps.num_msix_vectors_vf,
6365                          pf->hw.func_caps.fd_filters_guaranteed,
6366                          pf->hw.func_caps.fd_filters_best_effort,
6367                          pf->hw.func_caps.num_tx_qp,
6368                          pf->hw.func_caps.num_vsis);
6369
6370 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6371                        + pf->hw.func_caps.num_vfs)
6372         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6373                 dev_info(&pf->pdev->dev,
6374                          "got num_vsis %d, setting num_vsis to %d\n",
6375                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6376                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6377         }
6378
6379         return 0;
6380 }
6381
6382 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6383
6384 /**
6385  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6386  * @pf: board private structure
6387  **/
6388 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6389 {
6390         struct i40e_vsi *vsi;
6391         int i;
6392
6393         /* quick workaround for an NVM issue that leaves a critical register
6394          * uninitialized
6395          */
6396         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6397                 static const u32 hkey[] = {
6398                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6399                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6400                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6401                         0x95b3a76d};
6402
6403                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6404                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6405         }
6406
6407         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6408                 return;
6409
6410         /* find existing VSI and see if it needs configuring */
6411         vsi = NULL;
6412         for (i = 0; i < pf->num_alloc_vsi; i++) {
6413                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6414                         vsi = pf->vsi[i];
6415                         break;
6416                 }
6417         }
6418
6419         /* create a new VSI if none exists */
6420         if (!vsi) {
6421                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6422                                      pf->vsi[pf->lan_vsi]->seid, 0);
6423                 if (!vsi) {
6424                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6425                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6426                         return;
6427                 }
6428         }
6429
6430         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6431 }
6432
6433 /**
6434  * i40e_fdir_teardown - release the Flow Director resources
6435  * @pf: board private structure
6436  **/
6437 static void i40e_fdir_teardown(struct i40e_pf *pf)
6438 {
6439         int i;
6440
6441         i40e_fdir_filter_exit(pf);
6442         for (i = 0; i < pf->num_alloc_vsi; i++) {
6443                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6444                         i40e_vsi_release(pf->vsi[i]);
6445                         break;
6446                 }
6447         }
6448 }
6449
6450 /**
6451  * i40e_prep_for_reset - prep for the core to reset
6452  * @pf: board private structure
6453  *
6454  * Close up the VFs and other things in prep for PF Reset.
6455   **/
6456 static void i40e_prep_for_reset(struct i40e_pf *pf)
6457 {
6458         struct i40e_hw *hw = &pf->hw;
6459         i40e_status ret = 0;
6460         u32 v;
6461
6462         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6463         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6464                 return;
6465
6466         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6467
6468         /* quiesce the VSIs and their queues that are not already DOWN */
6469         i40e_pf_quiesce_all_vsi(pf);
6470
6471         for (v = 0; v < pf->num_alloc_vsi; v++) {
6472                 if (pf->vsi[v])
6473                         pf->vsi[v]->seid = 0;
6474         }
6475
6476         i40e_shutdown_adminq(&pf->hw);
6477
6478         /* call shutdown HMC */
6479         if (hw->hmc.hmc_obj) {
6480                 ret = i40e_shutdown_lan_hmc(hw);
6481                 if (ret)
6482                         dev_warn(&pf->pdev->dev,
6483                                  "shutdown_lan_hmc failed: %d\n", ret);
6484         }
6485 }
6486
6487 /**
6488  * i40e_send_version - update firmware with driver version
6489  * @pf: PF struct
6490  */
6491 static void i40e_send_version(struct i40e_pf *pf)
6492 {
6493         struct i40e_driver_version dv;
6494
6495         dv.major_version = DRV_VERSION_MAJOR;
6496         dv.minor_version = DRV_VERSION_MINOR;
6497         dv.build_version = DRV_VERSION_BUILD;
6498         dv.subbuild_version = 0;
6499         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6500         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6501 }
6502
6503 /**
6504  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6505  * @pf: board private structure
6506  * @reinit: if the Main VSI needs to re-initialized.
6507  **/
6508 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6509 {
6510         struct i40e_hw *hw = &pf->hw;
6511         u8 set_fc_aq_fail = 0;
6512         i40e_status ret;
6513         u32 v;
6514
6515         /* Now we wait for GRST to settle out.
6516          * We don't have to delete the VEBs or VSIs from the hw switch
6517          * because the reset will make them disappear.
6518          */
6519         ret = i40e_pf_reset(hw);
6520         if (ret) {
6521                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6522                 set_bit(__I40E_RESET_FAILED, &pf->state);
6523                 goto clear_recovery;
6524         }
6525         pf->pfr_count++;
6526
6527         if (test_bit(__I40E_DOWN, &pf->state))
6528                 goto clear_recovery;
6529         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6530
6531         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6532         ret = i40e_init_adminq(&pf->hw);
6533         if (ret) {
6534                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6535                          i40e_stat_str(&pf->hw, ret),
6536                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6537                 goto clear_recovery;
6538         }
6539
6540         /* re-verify the eeprom if we just had an EMP reset */
6541         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6542                 i40e_verify_eeprom(pf);
6543
6544         i40e_clear_pxe_mode(hw);
6545         ret = i40e_get_capabilities(pf);
6546         if (ret)
6547                 goto end_core_reset;
6548
6549         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6550                                 hw->func_caps.num_rx_qp,
6551                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6552         if (ret) {
6553                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6554                 goto end_core_reset;
6555         }
6556         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6557         if (ret) {
6558                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6559                 goto end_core_reset;
6560         }
6561
6562 #ifdef CONFIG_I40E_DCB
6563         ret = i40e_init_pf_dcb(pf);
6564         if (ret) {
6565                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6566                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6567                 /* Continue without DCB enabled */
6568         }
6569 #endif /* CONFIG_I40E_DCB */
6570 #ifdef I40E_FCOE
6571         i40e_init_pf_fcoe(pf);
6572
6573 #endif
6574         /* do basic switch setup */
6575         ret = i40e_setup_pf_switch(pf, reinit);
6576         if (ret)
6577                 goto end_core_reset;
6578
6579         /* driver is only interested in link up/down and module qualification
6580          * reports from firmware
6581          */
6582         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6583                                        I40E_AQ_EVENT_LINK_UPDOWN |
6584                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6585         if (ret)
6586                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6587                          i40e_stat_str(&pf->hw, ret),
6588                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6589
6590         /* make sure our flow control settings are restored */
6591         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6592         if (ret)
6593                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6594                          i40e_stat_str(&pf->hw, ret),
6595                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6596
6597         /* Rebuild the VSIs and VEBs that existed before reset.
6598          * They are still in our local switch element arrays, so only
6599          * need to rebuild the switch model in the HW.
6600          *
6601          * If there were VEBs but the reconstitution failed, we'll try
6602          * try to recover minimal use by getting the basic PF VSI working.
6603          */
6604         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6605                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6606                 /* find the one VEB connected to the MAC, and find orphans */
6607                 for (v = 0; v < I40E_MAX_VEB; v++) {
6608                         if (!pf->veb[v])
6609                                 continue;
6610
6611                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6612                             pf->veb[v]->uplink_seid == 0) {
6613                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6614
6615                                 if (!ret)
6616                                         continue;
6617
6618                                 /* If Main VEB failed, we're in deep doodoo,
6619                                  * so give up rebuilding the switch and set up
6620                                  * for minimal rebuild of PF VSI.
6621                                  * If orphan failed, we'll report the error
6622                                  * but try to keep going.
6623                                  */
6624                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6625                                         dev_info(&pf->pdev->dev,
6626                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6627                                                  ret);
6628                                         pf->vsi[pf->lan_vsi]->uplink_seid
6629                                                                 = pf->mac_seid;
6630                                         break;
6631                                 } else if (pf->veb[v]->uplink_seid == 0) {
6632                                         dev_info(&pf->pdev->dev,
6633                                                  "rebuild of orphan VEB failed: %d\n",
6634                                                  ret);
6635                                 }
6636                         }
6637                 }
6638         }
6639
6640         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6641                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6642                 /* no VEB, so rebuild only the Main VSI */
6643                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6644                 if (ret) {
6645                         dev_info(&pf->pdev->dev,
6646                                  "rebuild of Main VSI failed: %d\n", ret);
6647                         goto end_core_reset;
6648                 }
6649         }
6650
6651         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6652             (pf->hw.aq.fw_maj_ver < 4)) {
6653                 msleep(75);
6654                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6655                 if (ret)
6656                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6657                                  i40e_stat_str(&pf->hw, ret),
6658                                  i40e_aq_str(&pf->hw,
6659                                              pf->hw.aq.asq_last_status));
6660         }
6661         /* reinit the misc interrupt */
6662         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6663                 ret = i40e_setup_misc_vector(pf);
6664
6665         /* restart the VSIs that were rebuilt and running before the reset */
6666         i40e_pf_unquiesce_all_vsi(pf);
6667
6668         if (pf->num_alloc_vfs) {
6669                 for (v = 0; v < pf->num_alloc_vfs; v++)
6670                         i40e_reset_vf(&pf->vf[v], true);
6671         }
6672
6673         /* tell the firmware that we're starting */
6674         i40e_send_version(pf);
6675
6676 end_core_reset:
6677         clear_bit(__I40E_RESET_FAILED, &pf->state);
6678 clear_recovery:
6679         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6680 }
6681
6682 /**
6683  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6684  * @pf: board private structure
6685  *
6686  * Close up the VFs and other things in prep for a Core Reset,
6687  * then get ready to rebuild the world.
6688  **/
6689 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6690 {
6691         i40e_prep_for_reset(pf);
6692         i40e_reset_and_rebuild(pf, false);
6693 }
6694
6695 /**
6696  * i40e_handle_mdd_event
6697  * @pf: pointer to the PF structure
6698  *
6699  * Called from the MDD irq handler to identify possibly malicious vfs
6700  **/
6701 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6702 {
6703         struct i40e_hw *hw = &pf->hw;
6704         bool mdd_detected = false;
6705         bool pf_mdd_detected = false;
6706         struct i40e_vf *vf;
6707         u32 reg;
6708         int i;
6709
6710         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6711                 return;
6712
6713         /* find what triggered the MDD event */
6714         reg = rd32(hw, I40E_GL_MDET_TX);
6715         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6716                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6717                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6718                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6719                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6720                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6721                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6722                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6723                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6724                                 pf->hw.func_caps.base_queue;
6725                 if (netif_msg_tx_err(pf))
6726                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6727                                  event, queue, pf_num, vf_num);
6728                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6729                 mdd_detected = true;
6730         }
6731         reg = rd32(hw, I40E_GL_MDET_RX);
6732         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6733                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6734                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6735                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6736                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6737                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6738                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6739                                 pf->hw.func_caps.base_queue;
6740                 if (netif_msg_rx_err(pf))
6741                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6742                                  event, queue, func);
6743                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6744                 mdd_detected = true;
6745         }
6746
6747         if (mdd_detected) {
6748                 reg = rd32(hw, I40E_PF_MDET_TX);
6749                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6750                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6751                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6752                         pf_mdd_detected = true;
6753                 }
6754                 reg = rd32(hw, I40E_PF_MDET_RX);
6755                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6756                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6757                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6758                         pf_mdd_detected = true;
6759                 }
6760                 /* Queue belongs to the PF, initiate a reset */
6761                 if (pf_mdd_detected) {
6762                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6763                         i40e_service_event_schedule(pf);
6764                 }
6765         }
6766
6767         /* see if one of the VFs needs its hand slapped */
6768         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6769                 vf = &(pf->vf[i]);
6770                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6771                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6772                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6773                         vf->num_mdd_events++;
6774                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6775                                  i);
6776                 }
6777
6778                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6779                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6780                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6781                         vf->num_mdd_events++;
6782                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6783                                  i);
6784                 }
6785
6786                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6787                         dev_info(&pf->pdev->dev,
6788                                  "Too many MDD events on VF %d, disabled\n", i);
6789                         dev_info(&pf->pdev->dev,
6790                                  "Use PF Control I/F to re-enable the VF\n");
6791                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6792                 }
6793         }
6794
6795         /* re-enable mdd interrupt cause */
6796         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6797         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6798         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6799         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6800         i40e_flush(hw);
6801 }
6802
6803 #ifdef CONFIG_I40E_VXLAN
6804 /**
6805  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6806  * @pf: board private structure
6807  **/
6808 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6809 {
6810         struct i40e_hw *hw = &pf->hw;
6811         i40e_status ret;
6812         __be16 port;
6813         int i;
6814
6815         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6816                 return;
6817
6818         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6819
6820         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6821                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6822                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6823                         port = pf->vxlan_ports[i];
6824                         if (port)
6825                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6826                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6827                                                      NULL, NULL);
6828                         else
6829                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6830
6831                         if (ret) {
6832                                 dev_info(&pf->pdev->dev,
6833                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6834                                          port ? "add" : "delete",
6835                                          ntohs(port), i,
6836                                          i40e_stat_str(&pf->hw, ret),
6837                                          i40e_aq_str(&pf->hw,
6838                                                     pf->hw.aq.asq_last_status));
6839                                 pf->vxlan_ports[i] = 0;
6840                         }
6841                 }
6842         }
6843 }
6844
6845 #endif
6846 /**
6847  * i40e_service_task - Run the driver's async subtasks
6848  * @work: pointer to work_struct containing our data
6849  **/
6850 static void i40e_service_task(struct work_struct *work)
6851 {
6852         struct i40e_pf *pf = container_of(work,
6853                                           struct i40e_pf,
6854                                           service_task);
6855         unsigned long start_time = jiffies;
6856
6857         /* don't bother with service tasks if a reset is in progress */
6858         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6859                 i40e_service_event_complete(pf);
6860                 return;
6861         }
6862
6863         i40e_detect_recover_hung(pf);
6864         i40e_reset_subtask(pf);
6865         i40e_handle_mdd_event(pf);
6866         i40e_vc_process_vflr_event(pf);
6867         i40e_watchdog_subtask(pf);
6868         i40e_fdir_reinit_subtask(pf);
6869         i40e_sync_filters_subtask(pf);
6870 #ifdef CONFIG_I40E_VXLAN
6871         i40e_sync_vxlan_filters_subtask(pf);
6872 #endif
6873         i40e_clean_adminq_subtask(pf);
6874
6875         i40e_service_event_complete(pf);
6876
6877         /* If the tasks have taken longer than one timer cycle or there
6878          * is more work to be done, reschedule the service task now
6879          * rather than wait for the timer to tick again.
6880          */
6881         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6882             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6883             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6884             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6885                 i40e_service_event_schedule(pf);
6886 }
6887
6888 /**
6889  * i40e_service_timer - timer callback
6890  * @data: pointer to PF struct
6891  **/
6892 static void i40e_service_timer(unsigned long data)
6893 {
6894         struct i40e_pf *pf = (struct i40e_pf *)data;
6895
6896         mod_timer(&pf->service_timer,
6897                   round_jiffies(jiffies + pf->service_timer_period));
6898         i40e_service_event_schedule(pf);
6899 }
6900
6901 /**
6902  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6903  * @vsi: the VSI being configured
6904  **/
6905 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6906 {
6907         struct i40e_pf *pf = vsi->back;
6908
6909         switch (vsi->type) {
6910         case I40E_VSI_MAIN:
6911                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6912                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6913                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6914                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6915                         vsi->num_q_vectors = pf->num_lan_msix;
6916                 else
6917                         vsi->num_q_vectors = 1;
6918
6919                 break;
6920
6921         case I40E_VSI_FDIR:
6922                 vsi->alloc_queue_pairs = 1;
6923                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6924                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6925                 vsi->num_q_vectors = 1;
6926                 break;
6927
6928         case I40E_VSI_VMDQ2:
6929                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6930                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6931                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6932                 vsi->num_q_vectors = pf->num_vmdq_msix;
6933                 break;
6934
6935         case I40E_VSI_SRIOV:
6936                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6937                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6938                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6939                 break;
6940
6941 #ifdef I40E_FCOE
6942         case I40E_VSI_FCOE:
6943                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6944                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6945                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6946                 vsi->num_q_vectors = pf->num_fcoe_msix;
6947                 break;
6948
6949 #endif /* I40E_FCOE */
6950         default:
6951                 WARN_ON(1);
6952                 return -ENODATA;
6953         }
6954
6955         return 0;
6956 }
6957
6958 /**
6959  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6960  * @type: VSI pointer
6961  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6962  *
6963  * On error: returns error code (negative)
6964  * On success: returns 0
6965  **/
6966 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6967 {
6968         int size;
6969         int ret = 0;
6970
6971         /* allocate memory for both Tx and Rx ring pointers */
6972         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6973         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6974         if (!vsi->tx_rings)
6975                 return -ENOMEM;
6976         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6977
6978         if (alloc_qvectors) {
6979                 /* allocate memory for q_vector pointers */
6980                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6981                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6982                 if (!vsi->q_vectors) {
6983                         ret = -ENOMEM;
6984                         goto err_vectors;
6985                 }
6986         }
6987         return ret;
6988
6989 err_vectors:
6990         kfree(vsi->tx_rings);
6991         return ret;
6992 }
6993
6994 /**
6995  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6996  * @pf: board private structure
6997  * @type: type of VSI
6998  *
6999  * On error: returns error code (negative)
7000  * On success: returns vsi index in PF (positive)
7001  **/
7002 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7003 {
7004         int ret = -ENODEV;
7005         struct i40e_vsi *vsi;
7006         int vsi_idx;
7007         int i;
7008
7009         /* Need to protect the allocation of the VSIs at the PF level */
7010         mutex_lock(&pf->switch_mutex);
7011
7012         /* VSI list may be fragmented if VSI creation/destruction has
7013          * been happening.  We can afford to do a quick scan to look
7014          * for any free VSIs in the list.
7015          *
7016          * find next empty vsi slot, looping back around if necessary
7017          */
7018         i = pf->next_vsi;
7019         while (i < pf->num_alloc_vsi && pf->vsi[i])
7020                 i++;
7021         if (i >= pf->num_alloc_vsi) {
7022                 i = 0;
7023                 while (i < pf->next_vsi && pf->vsi[i])
7024                         i++;
7025         }
7026
7027         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7028                 vsi_idx = i;             /* Found one! */
7029         } else {
7030                 ret = -ENODEV;
7031                 goto unlock_pf;  /* out of VSI slots! */
7032         }
7033         pf->next_vsi = ++i;
7034
7035         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7036         if (!vsi) {
7037                 ret = -ENOMEM;
7038                 goto unlock_pf;
7039         }
7040         vsi->type = type;
7041         vsi->back = pf;
7042         set_bit(__I40E_DOWN, &vsi->state);
7043         vsi->flags = 0;
7044         vsi->idx = vsi_idx;
7045         vsi->rx_itr_setting = pf->rx_itr_default;
7046         vsi->tx_itr_setting = pf->tx_itr_default;
7047         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7048                                 pf->rss_table_size : 64;
7049         vsi->netdev_registered = false;
7050         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7051         INIT_LIST_HEAD(&vsi->mac_filter_list);
7052         vsi->irqs_ready = false;
7053
7054         ret = i40e_set_num_rings_in_vsi(vsi);
7055         if (ret)
7056                 goto err_rings;
7057
7058         ret = i40e_vsi_alloc_arrays(vsi, true);
7059         if (ret)
7060                 goto err_rings;
7061
7062         /* Setup default MSIX irq handler for VSI */
7063         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7064
7065         pf->vsi[vsi_idx] = vsi;
7066         ret = vsi_idx;
7067         goto unlock_pf;
7068
7069 err_rings:
7070         pf->next_vsi = i - 1;
7071         kfree(vsi);
7072 unlock_pf:
7073         mutex_unlock(&pf->switch_mutex);
7074         return ret;
7075 }
7076
7077 /**
7078  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7079  * @type: VSI pointer
7080  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7081  *
7082  * On error: returns error code (negative)
7083  * On success: returns 0
7084  **/
7085 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7086 {
7087         /* free the ring and vector containers */
7088         if (free_qvectors) {
7089                 kfree(vsi->q_vectors);
7090                 vsi->q_vectors = NULL;
7091         }
7092         kfree(vsi->tx_rings);
7093         vsi->tx_rings = NULL;
7094         vsi->rx_rings = NULL;
7095 }
7096
7097 /**
7098  * i40e_vsi_clear - Deallocate the VSI provided
7099  * @vsi: the VSI being un-configured
7100  **/
7101 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7102 {
7103         struct i40e_pf *pf;
7104
7105         if (!vsi)
7106                 return 0;
7107
7108         if (!vsi->back)
7109                 goto free_vsi;
7110         pf = vsi->back;
7111
7112         mutex_lock(&pf->switch_mutex);
7113         if (!pf->vsi[vsi->idx]) {
7114                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7115                         vsi->idx, vsi->idx, vsi, vsi->type);
7116                 goto unlock_vsi;
7117         }
7118
7119         if (pf->vsi[vsi->idx] != vsi) {
7120                 dev_err(&pf->pdev->dev,
7121                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7122                         pf->vsi[vsi->idx]->idx,
7123                         pf->vsi[vsi->idx],
7124                         pf->vsi[vsi->idx]->type,
7125                         vsi->idx, vsi, vsi->type);
7126                 goto unlock_vsi;
7127         }
7128
7129         /* updates the PF for this cleared vsi */
7130         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7131         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7132
7133         i40e_vsi_free_arrays(vsi, true);
7134
7135         pf->vsi[vsi->idx] = NULL;
7136         if (vsi->idx < pf->next_vsi)
7137                 pf->next_vsi = vsi->idx;
7138
7139 unlock_vsi:
7140         mutex_unlock(&pf->switch_mutex);
7141 free_vsi:
7142         kfree(vsi);
7143
7144         return 0;
7145 }
7146
7147 /**
7148  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7149  * @vsi: the VSI being cleaned
7150  **/
7151 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7152 {
7153         int i;
7154
7155         if (vsi->tx_rings && vsi->tx_rings[0]) {
7156                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7157                         kfree_rcu(vsi->tx_rings[i], rcu);
7158                         vsi->tx_rings[i] = NULL;
7159                         vsi->rx_rings[i] = NULL;
7160                 }
7161         }
7162 }
7163
7164 /**
7165  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7166  * @vsi: the VSI being configured
7167  **/
7168 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7169 {
7170         struct i40e_ring *tx_ring, *rx_ring;
7171         struct i40e_pf *pf = vsi->back;
7172         int i;
7173
7174         /* Set basic values in the rings to be used later during open() */
7175         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7176                 /* allocate space for both Tx and Rx in one shot */
7177                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7178                 if (!tx_ring)
7179                         goto err_out;
7180
7181                 tx_ring->queue_index = i;
7182                 tx_ring->reg_idx = vsi->base_queue + i;
7183                 tx_ring->ring_active = false;
7184                 tx_ring->vsi = vsi;
7185                 tx_ring->netdev = vsi->netdev;
7186                 tx_ring->dev = &pf->pdev->dev;
7187                 tx_ring->count = vsi->num_desc;
7188                 tx_ring->size = 0;
7189                 tx_ring->dcb_tc = 0;
7190                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7191                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7192                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7193                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7194                 vsi->tx_rings[i] = tx_ring;
7195
7196                 rx_ring = &tx_ring[1];
7197                 rx_ring->queue_index = i;
7198                 rx_ring->reg_idx = vsi->base_queue + i;
7199                 rx_ring->ring_active = false;
7200                 rx_ring->vsi = vsi;
7201                 rx_ring->netdev = vsi->netdev;
7202                 rx_ring->dev = &pf->pdev->dev;
7203                 rx_ring->count = vsi->num_desc;
7204                 rx_ring->size = 0;
7205                 rx_ring->dcb_tc = 0;
7206                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7207                         set_ring_16byte_desc_enabled(rx_ring);
7208                 else
7209                         clear_ring_16byte_desc_enabled(rx_ring);
7210                 vsi->rx_rings[i] = rx_ring;
7211         }
7212
7213         return 0;
7214
7215 err_out:
7216         i40e_vsi_clear_rings(vsi);
7217         return -ENOMEM;
7218 }
7219
7220 /**
7221  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7222  * @pf: board private structure
7223  * @vectors: the number of MSI-X vectors to request
7224  *
7225  * Returns the number of vectors reserved, or error
7226  **/
7227 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7228 {
7229         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7230                                         I40E_MIN_MSIX, vectors);
7231         if (vectors < 0) {
7232                 dev_info(&pf->pdev->dev,
7233                          "MSI-X vector reservation failed: %d\n", vectors);
7234                 vectors = 0;
7235         }
7236
7237         return vectors;
7238 }
7239
7240 /**
7241  * i40e_init_msix - Setup the MSIX capability
7242  * @pf: board private structure
7243  *
7244  * Work with the OS to set up the MSIX vectors needed.
7245  *
7246  * Returns the number of vectors reserved or negative on failure
7247  **/
7248 static int i40e_init_msix(struct i40e_pf *pf)
7249 {
7250         struct i40e_hw *hw = &pf->hw;
7251         int vectors_left;
7252         int v_budget, i;
7253         int v_actual;
7254
7255         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7256                 return -ENODEV;
7257
7258         /* The number of vectors we'll request will be comprised of:
7259          *   - Add 1 for "other" cause for Admin Queue events, etc.
7260          *   - The number of LAN queue pairs
7261          *      - Queues being used for RSS.
7262          *              We don't need as many as max_rss_size vectors.
7263          *              use rss_size instead in the calculation since that
7264          *              is governed by number of cpus in the system.
7265          *      - assumes symmetric Tx/Rx pairing
7266          *   - The number of VMDq pairs
7267 #ifdef I40E_FCOE
7268          *   - The number of FCOE qps.
7269 #endif
7270          * Once we count this up, try the request.
7271          *
7272          * If we can't get what we want, we'll simplify to nearly nothing
7273          * and try again.  If that still fails, we punt.
7274          */
7275         vectors_left = hw->func_caps.num_msix_vectors;
7276         v_budget = 0;
7277
7278         /* reserve one vector for miscellaneous handler */
7279         if (vectors_left) {
7280                 v_budget++;
7281                 vectors_left--;
7282         }
7283
7284         /* reserve vectors for the main PF traffic queues */
7285         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7286         vectors_left -= pf->num_lan_msix;
7287         v_budget += pf->num_lan_msix;
7288
7289         /* reserve one vector for sideband flow director */
7290         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7291                 if (vectors_left) {
7292                         v_budget++;
7293                         vectors_left--;
7294                 } else {
7295                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7296                 }
7297         }
7298
7299 #ifdef I40E_FCOE
7300         /* can we reserve enough for FCoE? */
7301         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7302                 if (!vectors_left)
7303                         pf->num_fcoe_msix = 0;
7304                 else if (vectors_left >= pf->num_fcoe_qps)
7305                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7306                 else
7307                         pf->num_fcoe_msix = 1;
7308                 v_budget += pf->num_fcoe_msix;
7309                 vectors_left -= pf->num_fcoe_msix;
7310         }
7311
7312 #endif
7313         /* any vectors left over go for VMDq support */
7314         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7315                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7316                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7317
7318                 /* if we're short on vectors for what's desired, we limit
7319                  * the queues per vmdq.  If this is still more than are
7320                  * available, the user will need to change the number of
7321                  * queues/vectors used by the PF later with the ethtool
7322                  * channels command
7323                  */
7324                 if (vmdq_vecs < vmdq_vecs_wanted)
7325                         pf->num_vmdq_qps = 1;
7326                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7327
7328                 v_budget += vmdq_vecs;
7329                 vectors_left -= vmdq_vecs;
7330         }
7331
7332         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7333                                    GFP_KERNEL);
7334         if (!pf->msix_entries)
7335                 return -ENOMEM;
7336
7337         for (i = 0; i < v_budget; i++)
7338                 pf->msix_entries[i].entry = i;
7339         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7340
7341         if (v_actual != v_budget) {
7342                 /* If we have limited resources, we will start with no vectors
7343                  * for the special features and then allocate vectors to some
7344                  * of these features based on the policy and at the end disable
7345                  * the features that did not get any vectors.
7346                  */
7347 #ifdef I40E_FCOE
7348                 pf->num_fcoe_qps = 0;
7349                 pf->num_fcoe_msix = 0;
7350 #endif
7351                 pf->num_vmdq_msix = 0;
7352         }
7353
7354         if (v_actual < I40E_MIN_MSIX) {
7355                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7356                 kfree(pf->msix_entries);
7357                 pf->msix_entries = NULL;
7358                 return -ENODEV;
7359
7360         } else if (v_actual == I40E_MIN_MSIX) {
7361                 /* Adjust for minimal MSIX use */
7362                 pf->num_vmdq_vsis = 0;
7363                 pf->num_vmdq_qps = 0;
7364                 pf->num_lan_qps = 1;
7365                 pf->num_lan_msix = 1;
7366
7367         } else if (v_actual != v_budget) {
7368                 int vec;
7369
7370                 /* reserve the misc vector */
7371                 vec = v_actual - 1;
7372
7373                 /* Scale vector usage down */
7374                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7375                 pf->num_vmdq_vsis = 1;
7376                 pf->num_vmdq_qps = 1;
7377                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7378
7379                 /* partition out the remaining vectors */
7380                 switch (vec) {
7381                 case 2:
7382                         pf->num_lan_msix = 1;
7383                         break;
7384                 case 3:
7385 #ifdef I40E_FCOE
7386                         /* give one vector to FCoE */
7387                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7388                                 pf->num_lan_msix = 1;
7389                                 pf->num_fcoe_msix = 1;
7390                         }
7391 #else
7392                         pf->num_lan_msix = 2;
7393 #endif
7394                         break;
7395                 default:
7396 #ifdef I40E_FCOE
7397                         /* give one vector to FCoE */
7398                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7399                                 pf->num_fcoe_msix = 1;
7400                                 vec--;
7401                         }
7402 #endif
7403                         /* give the rest to the PF */
7404                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7405                         break;
7406                 }
7407         }
7408
7409         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7410             (pf->num_vmdq_msix == 0)) {
7411                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7412                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7413         }
7414 #ifdef I40E_FCOE
7415
7416         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7417                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7418                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7419         }
7420 #endif
7421         return v_actual;
7422 }
7423
7424 /**
7425  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7426  * @vsi: the VSI being configured
7427  * @v_idx: index of the vector in the vsi struct
7428  *
7429  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7430  **/
7431 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7432 {
7433         struct i40e_q_vector *q_vector;
7434
7435         /* allocate q_vector */
7436         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7437         if (!q_vector)
7438                 return -ENOMEM;
7439
7440         q_vector->vsi = vsi;
7441         q_vector->v_idx = v_idx;
7442         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7443         if (vsi->netdev)
7444                 netif_napi_add(vsi->netdev, &q_vector->napi,
7445                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7446
7447         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7448         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7449
7450         /* tie q_vector and vsi together */
7451         vsi->q_vectors[v_idx] = q_vector;
7452
7453         return 0;
7454 }
7455
7456 /**
7457  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7458  * @vsi: the VSI being configured
7459  *
7460  * We allocate one q_vector per queue interrupt.  If allocation fails we
7461  * return -ENOMEM.
7462  **/
7463 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7464 {
7465         struct i40e_pf *pf = vsi->back;
7466         int v_idx, num_q_vectors;
7467         int err;
7468
7469         /* if not MSIX, give the one vector only to the LAN VSI */
7470         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7471                 num_q_vectors = vsi->num_q_vectors;
7472         else if (vsi == pf->vsi[pf->lan_vsi])
7473                 num_q_vectors = 1;
7474         else
7475                 return -EINVAL;
7476
7477         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7478                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7479                 if (err)
7480                         goto err_out;
7481         }
7482
7483         return 0;
7484
7485 err_out:
7486         while (v_idx--)
7487                 i40e_free_q_vector(vsi, v_idx);
7488
7489         return err;
7490 }
7491
7492 /**
7493  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7494  * @pf: board private structure to initialize
7495  **/
7496 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7497 {
7498         int vectors = 0;
7499         ssize_t size;
7500
7501         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7502                 vectors = i40e_init_msix(pf);
7503                 if (vectors < 0) {
7504                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7505 #ifdef I40E_FCOE
7506                                        I40E_FLAG_FCOE_ENABLED   |
7507 #endif
7508                                        I40E_FLAG_RSS_ENABLED    |
7509                                        I40E_FLAG_DCB_CAPABLE    |
7510                                        I40E_FLAG_SRIOV_ENABLED  |
7511                                        I40E_FLAG_FD_SB_ENABLED  |
7512                                        I40E_FLAG_FD_ATR_ENABLED |
7513                                        I40E_FLAG_VMDQ_ENABLED);
7514
7515                         /* rework the queue expectations without MSIX */
7516                         i40e_determine_queue_usage(pf);
7517                 }
7518         }
7519
7520         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7521             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7522                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7523                 vectors = pci_enable_msi(pf->pdev);
7524                 if (vectors < 0) {
7525                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7526                                  vectors);
7527                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7528                 }
7529                 vectors = 1;  /* one MSI or Legacy vector */
7530         }
7531
7532         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7533                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7534
7535         /* set up vector assignment tracking */
7536         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7537         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7538         if (!pf->irq_pile) {
7539                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7540                 return -ENOMEM;
7541         }
7542         pf->irq_pile->num_entries = vectors;
7543         pf->irq_pile->search_hint = 0;
7544
7545         /* track first vector for misc interrupts, ignore return */
7546         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7547
7548         return 0;
7549 }
7550
7551 /**
7552  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7553  * @pf: board private structure
7554  *
7555  * This sets up the handler for MSIX 0, which is used to manage the
7556  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7557  * when in MSI or Legacy interrupt mode.
7558  **/
7559 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7560 {
7561         struct i40e_hw *hw = &pf->hw;
7562         int err = 0;
7563
7564         /* Only request the irq if this is the first time through, and
7565          * not when we're rebuilding after a Reset
7566          */
7567         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7568                 err = request_irq(pf->msix_entries[0].vector,
7569                                   i40e_intr, 0, pf->int_name, pf);
7570                 if (err) {
7571                         dev_info(&pf->pdev->dev,
7572                                  "request_irq for %s failed: %d\n",
7573                                  pf->int_name, err);
7574                         return -EFAULT;
7575                 }
7576         }
7577
7578         i40e_enable_misc_int_causes(pf);
7579
7580         /* associate no queues to the misc vector */
7581         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7582         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7583
7584         i40e_flush(hw);
7585
7586         i40e_irq_dynamic_enable_icr0(pf);
7587
7588         return err;
7589 }
7590
7591 /**
7592  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7593  * @vsi: vsi structure
7594  * @seed: RSS hash seed
7595  **/
7596 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7597 {
7598         struct i40e_aqc_get_set_rss_key_data rss_key;
7599         struct i40e_pf *pf = vsi->back;
7600         struct i40e_hw *hw = &pf->hw;
7601         bool pf_lut = false;
7602         u8 *rss_lut;
7603         int ret, i;
7604
7605         memset(&rss_key, 0, sizeof(rss_key));
7606         memcpy(&rss_key, seed, sizeof(rss_key));
7607
7608         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7609         if (!rss_lut)
7610                 return -ENOMEM;
7611
7612         /* Populate the LUT with max no. of queues in round robin fashion */
7613         for (i = 0; i < vsi->rss_table_size; i++)
7614                 rss_lut[i] = i % vsi->rss_size;
7615
7616         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7617         if (ret) {
7618                 dev_info(&pf->pdev->dev,
7619                          "Cannot set RSS key, err %s aq_err %s\n",
7620                          i40e_stat_str(&pf->hw, ret),
7621                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7622                 goto config_rss_aq_out;
7623         }
7624
7625         if (vsi->type == I40E_VSI_MAIN)
7626                 pf_lut = true;
7627
7628         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7629                                   vsi->rss_table_size);
7630         if (ret)
7631                 dev_info(&pf->pdev->dev,
7632                          "Cannot set RSS lut, err %s aq_err %s\n",
7633                          i40e_stat_str(&pf->hw, ret),
7634                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7635
7636 config_rss_aq_out:
7637         kfree(rss_lut);
7638         return ret;
7639 }
7640
7641 /**
7642  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7643  * @vsi: VSI structure
7644  **/
7645 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7646 {
7647         u8 seed[I40E_HKEY_ARRAY_SIZE];
7648         struct i40e_pf *pf = vsi->back;
7649
7650         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7651         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7652
7653         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7654                 return i40e_config_rss_aq(vsi, seed);
7655
7656         return 0;
7657 }
7658
7659 /**
7660  * i40e_config_rss_reg - Prepare for RSS if used
7661  * @pf: board private structure
7662  * @seed: RSS hash seed
7663  **/
7664 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7665 {
7666         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7667         struct i40e_hw *hw = &pf->hw;
7668         u32 *seed_dw = (u32 *)seed;
7669         u32 current_queue = 0;
7670         u32 lut = 0;
7671         int i, j;
7672
7673         /* Fill out hash function seed */
7674         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7675                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7676
7677         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7678                 lut = 0;
7679                 for (j = 0; j < 4; j++) {
7680                         if (current_queue == vsi->rss_size)
7681                                 current_queue = 0;
7682                         lut |= ((current_queue) << (8 * j));
7683                         current_queue++;
7684                 }
7685                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7686         }
7687         i40e_flush(hw);
7688
7689         return 0;
7690 }
7691
7692 /**
7693  * i40e_config_rss - Prepare for RSS if used
7694  * @pf: board private structure
7695  **/
7696 static int i40e_config_rss(struct i40e_pf *pf)
7697 {
7698         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7699         u8 seed[I40E_HKEY_ARRAY_SIZE];
7700         struct i40e_hw *hw = &pf->hw;
7701         u32 reg_val;
7702         u64 hena;
7703
7704         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7705
7706         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7707         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7708                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7709         hena |= i40e_pf_get_default_rss_hena(pf);
7710
7711         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7712         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7713
7714         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7715
7716         /* Determine the RSS table size based on the hardware capabilities */
7717         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7718         reg_val = (pf->rss_table_size == 512) ?
7719                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7720                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7721         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7722
7723         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7724                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7725         else
7726                 return i40e_config_rss_reg(pf, seed);
7727 }
7728
7729 /**
7730  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7731  * @pf: board private structure
7732  * @queue_count: the requested queue count for rss.
7733  *
7734  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7735  * count which may be different from the requested queue count.
7736  **/
7737 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7738 {
7739         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7740         int new_rss_size;
7741
7742         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7743                 return 0;
7744
7745         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7746
7747         if (queue_count != vsi->num_queue_pairs) {
7748                 vsi->req_queue_pairs = queue_count;
7749                 i40e_prep_for_reset(pf);
7750
7751                 pf->rss_size = new_rss_size;
7752
7753                 i40e_reset_and_rebuild(pf, true);
7754                 i40e_config_rss(pf);
7755         }
7756         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7757         return pf->rss_size;
7758 }
7759
7760 /**
7761  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7762  * @pf: board private structure
7763  **/
7764 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7765 {
7766         i40e_status status;
7767         bool min_valid, max_valid;
7768         u32 max_bw, min_bw;
7769
7770         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7771                                            &min_valid, &max_valid);
7772
7773         if (!status) {
7774                 if (min_valid)
7775                         pf->npar_min_bw = min_bw;
7776                 if (max_valid)
7777                         pf->npar_max_bw = max_bw;
7778         }
7779
7780         return status;
7781 }
7782
7783 /**
7784  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7785  * @pf: board private structure
7786  **/
7787 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7788 {
7789         struct i40e_aqc_configure_partition_bw_data bw_data;
7790         i40e_status status;
7791
7792         /* Set the valid bit for this PF */
7793         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7794         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7795         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7796
7797         /* Set the new bandwidths */
7798         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7799
7800         return status;
7801 }
7802
7803 /**
7804  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7805  * @pf: board private structure
7806  **/
7807 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7808 {
7809         /* Commit temporary BW setting to permanent NVM image */
7810         enum i40e_admin_queue_err last_aq_status;
7811         i40e_status ret;
7812         u16 nvm_word;
7813
7814         if (pf->hw.partition_id != 1) {
7815                 dev_info(&pf->pdev->dev,
7816                          "Commit BW only works on partition 1! This is partition %d",
7817                          pf->hw.partition_id);
7818                 ret = I40E_NOT_SUPPORTED;
7819                 goto bw_commit_out;
7820         }
7821
7822         /* Acquire NVM for read access */
7823         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7824         last_aq_status = pf->hw.aq.asq_last_status;
7825         if (ret) {
7826                 dev_info(&pf->pdev->dev,
7827                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7828                          i40e_stat_str(&pf->hw, ret),
7829                          i40e_aq_str(&pf->hw, last_aq_status));
7830                 goto bw_commit_out;
7831         }
7832
7833         /* Read word 0x10 of NVM - SW compatibility word 1 */
7834         ret = i40e_aq_read_nvm(&pf->hw,
7835                                I40E_SR_NVM_CONTROL_WORD,
7836                                0x10, sizeof(nvm_word), &nvm_word,
7837                                false, NULL);
7838         /* Save off last admin queue command status before releasing
7839          * the NVM
7840          */
7841         last_aq_status = pf->hw.aq.asq_last_status;
7842         i40e_release_nvm(&pf->hw);
7843         if (ret) {
7844                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7845                          i40e_stat_str(&pf->hw, ret),
7846                          i40e_aq_str(&pf->hw, last_aq_status));
7847                 goto bw_commit_out;
7848         }
7849
7850         /* Wait a bit for NVM release to complete */
7851         msleep(50);
7852
7853         /* Acquire NVM for write access */
7854         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7855         last_aq_status = pf->hw.aq.asq_last_status;
7856         if (ret) {
7857                 dev_info(&pf->pdev->dev,
7858                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7859                          i40e_stat_str(&pf->hw, ret),
7860                          i40e_aq_str(&pf->hw, last_aq_status));
7861                 goto bw_commit_out;
7862         }
7863         /* Write it back out unchanged to initiate update NVM,
7864          * which will force a write of the shadow (alt) RAM to
7865          * the NVM - thus storing the bandwidth values permanently.
7866          */
7867         ret = i40e_aq_update_nvm(&pf->hw,
7868                                  I40E_SR_NVM_CONTROL_WORD,
7869                                  0x10, sizeof(nvm_word),
7870                                  &nvm_word, true, NULL);
7871         /* Save off last admin queue command status before releasing
7872          * the NVM
7873          */
7874         last_aq_status = pf->hw.aq.asq_last_status;
7875         i40e_release_nvm(&pf->hw);
7876         if (ret)
7877                 dev_info(&pf->pdev->dev,
7878                          "BW settings NOT SAVED, err %s aq_err %s\n",
7879                          i40e_stat_str(&pf->hw, ret),
7880                          i40e_aq_str(&pf->hw, last_aq_status));
7881 bw_commit_out:
7882
7883         return ret;
7884 }
7885
7886 /**
7887  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7888  * @pf: board private structure to initialize
7889  *
7890  * i40e_sw_init initializes the Adapter private data structure.
7891  * Fields are initialized based on PCI device information and
7892  * OS network device settings (MTU size).
7893  **/
7894 static int i40e_sw_init(struct i40e_pf *pf)
7895 {
7896         int err = 0;
7897         int size;
7898
7899         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7900                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7901         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7902         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7903                 if (I40E_DEBUG_USER & debug)
7904                         pf->hw.debug_mask = debug;
7905                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7906                                                 I40E_DEFAULT_MSG_ENABLE);
7907         }
7908
7909         /* Set default capability flags */
7910         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7911                     I40E_FLAG_MSI_ENABLED     |
7912                     I40E_FLAG_MSIX_ENABLED;
7913
7914         if (iommu_present(&pci_bus_type))
7915                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7916         else
7917                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7918
7919         /* Set default ITR */
7920         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7921         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7922
7923         /* Depending on PF configurations, it is possible that the RSS
7924          * maximum might end up larger than the available queues
7925          */
7926         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7927         pf->rss_size = 1;
7928         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7929         pf->rss_size_max = min_t(int, pf->rss_size_max,
7930                                  pf->hw.func_caps.num_tx_qp);
7931         if (pf->hw.func_caps.rss) {
7932                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7933                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7934         }
7935
7936         /* MFP mode enabled */
7937         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7938                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7939                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7940                 if (i40e_get_npar_bw_setting(pf))
7941                         dev_warn(&pf->pdev->dev,
7942                                  "Could not get NPAR bw settings\n");
7943                 else
7944                         dev_info(&pf->pdev->dev,
7945                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7946                                  pf->npar_min_bw, pf->npar_max_bw);
7947         }
7948
7949         /* FW/NVM is not yet fixed in this regard */
7950         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7951             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7952                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7953                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7954                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7955                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7956                 } else {
7957                         dev_info(&pf->pdev->dev,
7958                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7959                 }
7960                 pf->fdir_pf_filter_count =
7961                                  pf->hw.func_caps.fd_filters_guaranteed;
7962                 pf->hw.fdir_shared_filter_count =
7963                                  pf->hw.func_caps.fd_filters_best_effort;
7964         }
7965
7966         if (pf->hw.func_caps.vmdq) {
7967                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7968                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7969         }
7970
7971 #ifdef I40E_FCOE
7972         i40e_init_pf_fcoe(pf);
7973
7974 #endif /* I40E_FCOE */
7975 #ifdef CONFIG_PCI_IOV
7976         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7977                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7978                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7979                 pf->num_req_vfs = min_t(int,
7980                                         pf->hw.func_caps.num_vfs,
7981                                         I40E_MAX_VF_COUNT);
7982         }
7983 #endif /* CONFIG_PCI_IOV */
7984         if (pf->hw.mac.type == I40E_MAC_X722) {
7985                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7986                              I40E_FLAG_128_QP_RSS_CAPABLE |
7987                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7988                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7989                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7990                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7991         }
7992         pf->eeprom_version = 0xDEAD;
7993         pf->lan_veb = I40E_NO_VEB;
7994         pf->lan_vsi = I40E_NO_VSI;
7995
7996         /* By default FW has this off for performance reasons */
7997         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
7998
7999         /* set up queue assignment tracking */
8000         size = sizeof(struct i40e_lump_tracking)
8001                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8002         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8003         if (!pf->qp_pile) {
8004                 err = -ENOMEM;
8005                 goto sw_init_done;
8006         }
8007         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8008         pf->qp_pile->search_hint = 0;
8009
8010         pf->tx_timeout_recovery_level = 1;
8011
8012         mutex_init(&pf->switch_mutex);
8013
8014         /* If NPAR is enabled nudge the Tx scheduler */
8015         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8016                 i40e_set_npar_bw_setting(pf);
8017
8018 sw_init_done:
8019         return err;
8020 }
8021
8022 /**
8023  * i40e_set_ntuple - set the ntuple feature flag and take action
8024  * @pf: board private structure to initialize
8025  * @features: the feature set that the stack is suggesting
8026  *
8027  * returns a bool to indicate if reset needs to happen
8028  **/
8029 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8030 {
8031         bool need_reset = false;
8032
8033         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8034          * the state changed, we need to reset.
8035          */
8036         if (features & NETIF_F_NTUPLE) {
8037                 /* Enable filters and mark for reset */
8038                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8039                         need_reset = true;
8040                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8041         } else {
8042                 /* turn off filters, mark for reset and clear SW filter list */
8043                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8044                         need_reset = true;
8045                         i40e_fdir_filter_exit(pf);
8046                 }
8047                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8048                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8049                 /* reset fd counters */
8050                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8051                 pf->fdir_pf_active_filters = 0;
8052                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8053                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8054                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8055                 /* if ATR was auto disabled it can be re-enabled. */
8056                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8057                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8058                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8059         }
8060         return need_reset;
8061 }
8062
8063 /**
8064  * i40e_set_features - set the netdev feature flags
8065  * @netdev: ptr to the netdev being adjusted
8066  * @features: the feature set that the stack is suggesting
8067  **/
8068 static int i40e_set_features(struct net_device *netdev,
8069                              netdev_features_t features)
8070 {
8071         struct i40e_netdev_priv *np = netdev_priv(netdev);
8072         struct i40e_vsi *vsi = np->vsi;
8073         struct i40e_pf *pf = vsi->back;
8074         bool need_reset;
8075
8076         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8077                 i40e_vlan_stripping_enable(vsi);
8078         else
8079                 i40e_vlan_stripping_disable(vsi);
8080
8081         need_reset = i40e_set_ntuple(pf, features);
8082
8083         if (need_reset)
8084                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8085
8086         return 0;
8087 }
8088
8089 #ifdef CONFIG_I40E_VXLAN
8090 /**
8091  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8092  * @pf: board private structure
8093  * @port: The UDP port to look up
8094  *
8095  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8096  **/
8097 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8098 {
8099         u8 i;
8100
8101         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8102                 if (pf->vxlan_ports[i] == port)
8103                         return i;
8104         }
8105
8106         return i;
8107 }
8108
8109 /**
8110  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8111  * @netdev: This physical port's netdev
8112  * @sa_family: Socket Family that VXLAN is notifying us about
8113  * @port: New UDP port number that VXLAN started listening to
8114  **/
8115 static void i40e_add_vxlan_port(struct net_device *netdev,
8116                                 sa_family_t sa_family, __be16 port)
8117 {
8118         struct i40e_netdev_priv *np = netdev_priv(netdev);
8119         struct i40e_vsi *vsi = np->vsi;
8120         struct i40e_pf *pf = vsi->back;
8121         u8 next_idx;
8122         u8 idx;
8123
8124         if (sa_family == AF_INET6)
8125                 return;
8126
8127         idx = i40e_get_vxlan_port_idx(pf, port);
8128
8129         /* Check if port already exists */
8130         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8131                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8132                             ntohs(port));
8133                 return;
8134         }
8135
8136         /* Now check if there is space to add the new port */
8137         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8138
8139         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8140                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8141                             ntohs(port));
8142                 return;
8143         }
8144
8145         /* New port: add it and mark its index in the bitmap */
8146         pf->vxlan_ports[next_idx] = port;
8147         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8148         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8149 }
8150
8151 /**
8152  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8153  * @netdev: This physical port's netdev
8154  * @sa_family: Socket Family that VXLAN is notifying us about
8155  * @port: UDP port number that VXLAN stopped listening to
8156  **/
8157 static void i40e_del_vxlan_port(struct net_device *netdev,
8158                                 sa_family_t sa_family, __be16 port)
8159 {
8160         struct i40e_netdev_priv *np = netdev_priv(netdev);
8161         struct i40e_vsi *vsi = np->vsi;
8162         struct i40e_pf *pf = vsi->back;
8163         u8 idx;
8164
8165         if (sa_family == AF_INET6)
8166                 return;
8167
8168         idx = i40e_get_vxlan_port_idx(pf, port);
8169
8170         /* Check if port already exists */
8171         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8172                 /* if port exists, set it to 0 (mark for deletion)
8173                  * and make it pending
8174                  */
8175                 pf->vxlan_ports[idx] = 0;
8176                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8177                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8178         } else {
8179                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8180                             ntohs(port));
8181         }
8182 }
8183
8184 #endif
8185 static int i40e_get_phys_port_id(struct net_device *netdev,
8186                                  struct netdev_phys_item_id *ppid)
8187 {
8188         struct i40e_netdev_priv *np = netdev_priv(netdev);
8189         struct i40e_pf *pf = np->vsi->back;
8190         struct i40e_hw *hw = &pf->hw;
8191
8192         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8193                 return -EOPNOTSUPP;
8194
8195         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8196         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8197
8198         return 0;
8199 }
8200
8201 /**
8202  * i40e_ndo_fdb_add - add an entry to the hardware database
8203  * @ndm: the input from the stack
8204  * @tb: pointer to array of nladdr (unused)
8205  * @dev: the net device pointer
8206  * @addr: the MAC address entry being added
8207  * @flags: instructions from stack about fdb operation
8208  */
8209 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8210                             struct net_device *dev,
8211                             const unsigned char *addr, u16 vid,
8212                             u16 flags)
8213 {
8214         struct i40e_netdev_priv *np = netdev_priv(dev);
8215         struct i40e_pf *pf = np->vsi->back;
8216         int err = 0;
8217
8218         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8219                 return -EOPNOTSUPP;
8220
8221         if (vid) {
8222                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8223                 return -EINVAL;
8224         }
8225
8226         /* Hardware does not support aging addresses so if a
8227          * ndm_state is given only allow permanent addresses
8228          */
8229         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8230                 netdev_info(dev, "FDB only supports static addresses\n");
8231                 return -EINVAL;
8232         }
8233
8234         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8235                 err = dev_uc_add_excl(dev, addr);
8236         else if (is_multicast_ether_addr(addr))
8237                 err = dev_mc_add_excl(dev, addr);
8238         else
8239                 err = -EINVAL;
8240
8241         /* Only return duplicate errors if NLM_F_EXCL is set */
8242         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8243                 err = 0;
8244
8245         return err;
8246 }
8247
8248 /**
8249  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8250  * @dev: the netdev being configured
8251  * @nlh: RTNL message
8252  *
8253  * Inserts a new hardware bridge if not already created and
8254  * enables the bridging mode requested (VEB or VEPA). If the
8255  * hardware bridge has already been inserted and the request
8256  * is to change the mode then that requires a PF reset to
8257  * allow rebuild of the components with required hardware
8258  * bridge mode enabled.
8259  **/
8260 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8261                                    struct nlmsghdr *nlh,
8262                                    u16 flags)
8263 {
8264         struct i40e_netdev_priv *np = netdev_priv(dev);
8265         struct i40e_vsi *vsi = np->vsi;
8266         struct i40e_pf *pf = vsi->back;
8267         struct i40e_veb *veb = NULL;
8268         struct nlattr *attr, *br_spec;
8269         int i, rem;
8270
8271         /* Only for PF VSI for now */
8272         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8273                 return -EOPNOTSUPP;
8274
8275         /* Find the HW bridge for PF VSI */
8276         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8277                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8278                         veb = pf->veb[i];
8279         }
8280
8281         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8282
8283         nla_for_each_nested(attr, br_spec, rem) {
8284                 __u16 mode;
8285
8286                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8287                         continue;
8288
8289                 mode = nla_get_u16(attr);
8290                 if ((mode != BRIDGE_MODE_VEPA) &&
8291                     (mode != BRIDGE_MODE_VEB))
8292                         return -EINVAL;
8293
8294                 /* Insert a new HW bridge */
8295                 if (!veb) {
8296                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8297                                              vsi->tc_config.enabled_tc);
8298                         if (veb) {
8299                                 veb->bridge_mode = mode;
8300                                 i40e_config_bridge_mode(veb);
8301                         } else {
8302                                 /* No Bridge HW offload available */
8303                                 return -ENOENT;
8304                         }
8305                         break;
8306                 } else if (mode != veb->bridge_mode) {
8307                         /* Existing HW bridge but different mode needs reset */
8308                         veb->bridge_mode = mode;
8309                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8310                         if (mode == BRIDGE_MODE_VEB)
8311                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8312                         else
8313                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8314                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8315                         break;
8316                 }
8317         }
8318
8319         return 0;
8320 }
8321
8322 /**
8323  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8324  * @skb: skb buff
8325  * @pid: process id
8326  * @seq: RTNL message seq #
8327  * @dev: the netdev being configured
8328  * @filter_mask: unused
8329  *
8330  * Return the mode in which the hardware bridge is operating in
8331  * i.e VEB or VEPA.
8332  **/
8333 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8334                                    struct net_device *dev,
8335                                    u32 filter_mask, int nlflags)
8336 {
8337         struct i40e_netdev_priv *np = netdev_priv(dev);
8338         struct i40e_vsi *vsi = np->vsi;
8339         struct i40e_pf *pf = vsi->back;
8340         struct i40e_veb *veb = NULL;
8341         int i;
8342
8343         /* Only for PF VSI for now */
8344         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8345                 return -EOPNOTSUPP;
8346
8347         /* Find the HW bridge for the PF VSI */
8348         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8349                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8350                         veb = pf->veb[i];
8351         }
8352
8353         if (!veb)
8354                 return 0;
8355
8356         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8357                                        nlflags, 0, 0, filter_mask, NULL);
8358 }
8359
8360 #define I40E_MAX_TUNNEL_HDR_LEN 80
8361 /**
8362  * i40e_features_check - Validate encapsulated packet conforms to limits
8363  * @skb: skb buff
8364  * @netdev: This physical port's netdev
8365  * @features: Offload features that the stack believes apply
8366  **/
8367 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8368                                              struct net_device *dev,
8369                                              netdev_features_t features)
8370 {
8371         if (skb->encapsulation &&
8372             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8373              I40E_MAX_TUNNEL_HDR_LEN))
8374                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8375
8376         return features;
8377 }
8378
8379 static const struct net_device_ops i40e_netdev_ops = {
8380         .ndo_open               = i40e_open,
8381         .ndo_stop               = i40e_close,
8382         .ndo_start_xmit         = i40e_lan_xmit_frame,
8383         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8384         .ndo_set_rx_mode        = i40e_set_rx_mode,
8385         .ndo_validate_addr      = eth_validate_addr,
8386         .ndo_set_mac_address    = i40e_set_mac,
8387         .ndo_change_mtu         = i40e_change_mtu,
8388         .ndo_do_ioctl           = i40e_ioctl,
8389         .ndo_tx_timeout         = i40e_tx_timeout,
8390         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8391         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8392 #ifdef CONFIG_NET_POLL_CONTROLLER
8393         .ndo_poll_controller    = i40e_netpoll,
8394 #endif
8395         .ndo_setup_tc           = i40e_setup_tc,
8396 #ifdef I40E_FCOE
8397         .ndo_fcoe_enable        = i40e_fcoe_enable,
8398         .ndo_fcoe_disable       = i40e_fcoe_disable,
8399 #endif
8400         .ndo_set_features       = i40e_set_features,
8401         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8402         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8403         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8404         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8405         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8406         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8407 #ifdef CONFIG_I40E_VXLAN
8408         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8409         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8410 #endif
8411         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8412         .ndo_fdb_add            = i40e_ndo_fdb_add,
8413         .ndo_features_check     = i40e_features_check,
8414         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8415         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8416 };
8417
8418 /**
8419  * i40e_config_netdev - Setup the netdev flags
8420  * @vsi: the VSI being configured
8421  *
8422  * Returns 0 on success, negative value on failure
8423  **/
8424 static int i40e_config_netdev(struct i40e_vsi *vsi)
8425 {
8426         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8427         struct i40e_pf *pf = vsi->back;
8428         struct i40e_hw *hw = &pf->hw;
8429         struct i40e_netdev_priv *np;
8430         struct net_device *netdev;
8431         u8 mac_addr[ETH_ALEN];
8432         int etherdev_size;
8433
8434         etherdev_size = sizeof(struct i40e_netdev_priv);
8435         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8436         if (!netdev)
8437                 return -ENOMEM;
8438
8439         vsi->netdev = netdev;
8440         np = netdev_priv(netdev);
8441         np->vsi = vsi;
8442
8443         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8444                                   NETIF_F_GSO_UDP_TUNNEL |
8445                                   NETIF_F_TSO;
8446
8447         netdev->features = NETIF_F_SG                  |
8448                            NETIF_F_IP_CSUM             |
8449                            NETIF_F_SCTP_CSUM           |
8450                            NETIF_F_HIGHDMA             |
8451                            NETIF_F_GSO_UDP_TUNNEL      |
8452                            NETIF_F_HW_VLAN_CTAG_TX     |
8453                            NETIF_F_HW_VLAN_CTAG_RX     |
8454                            NETIF_F_HW_VLAN_CTAG_FILTER |
8455                            NETIF_F_IPV6_CSUM           |
8456                            NETIF_F_TSO                 |
8457                            NETIF_F_TSO_ECN             |
8458                            NETIF_F_TSO6                |
8459                            NETIF_F_RXCSUM              |
8460                            NETIF_F_RXHASH              |
8461                            0;
8462
8463         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8464                 netdev->features |= NETIF_F_NTUPLE;
8465
8466         /* copy netdev features into list of user selectable features */
8467         netdev->hw_features |= netdev->features;
8468
8469         if (vsi->type == I40E_VSI_MAIN) {
8470                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8471                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8472                 /* The following steps are necessary to prevent reception
8473                  * of tagged packets - some older NVM configurations load a
8474                  * default a MAC-VLAN filter that accepts any tagged packet
8475                  * which must be replaced by a normal filter.
8476                  */
8477                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8478                         i40e_add_filter(vsi, mac_addr,
8479                                         I40E_VLAN_ANY, false, true);
8480         } else {
8481                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8482                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8483                          pf->vsi[pf->lan_vsi]->netdev->name);
8484                 random_ether_addr(mac_addr);
8485                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8486         }
8487         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8488
8489         ether_addr_copy(netdev->dev_addr, mac_addr);
8490         ether_addr_copy(netdev->perm_addr, mac_addr);
8491         /* vlan gets same features (except vlan offload)
8492          * after any tweaks for specific VSI types
8493          */
8494         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8495                                                      NETIF_F_HW_VLAN_CTAG_RX |
8496                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8497         netdev->priv_flags |= IFF_UNICAST_FLT;
8498         netdev->priv_flags |= IFF_SUPP_NOFCS;
8499         /* Setup netdev TC information */
8500         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8501
8502         netdev->netdev_ops = &i40e_netdev_ops;
8503         netdev->watchdog_timeo = 5 * HZ;
8504         i40e_set_ethtool_ops(netdev);
8505 #ifdef I40E_FCOE
8506         i40e_fcoe_config_netdev(netdev, vsi);
8507 #endif
8508
8509         return 0;
8510 }
8511
8512 /**
8513  * i40e_vsi_delete - Delete a VSI from the switch
8514  * @vsi: the VSI being removed
8515  *
8516  * Returns 0 on success, negative value on failure
8517  **/
8518 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8519 {
8520         /* remove default VSI is not allowed */
8521         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8522                 return;
8523
8524         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8525 }
8526
8527 /**
8528  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8529  * @vsi: the VSI being queried
8530  *
8531  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8532  **/
8533 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8534 {
8535         struct i40e_veb *veb;
8536         struct i40e_pf *pf = vsi->back;
8537
8538         /* Uplink is not a bridge so default to VEB */
8539         if (vsi->veb_idx == I40E_NO_VEB)
8540                 return 1;
8541
8542         veb = pf->veb[vsi->veb_idx];
8543         /* Uplink is a bridge in VEPA mode */
8544         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8545                 return 0;
8546
8547         /* Uplink is a bridge in VEB mode */
8548         return 1;
8549 }
8550
8551 /**
8552  * i40e_add_vsi - Add a VSI to the switch
8553  * @vsi: the VSI being configured
8554  *
8555  * This initializes a VSI context depending on the VSI type to be added and
8556  * passes it down to the add_vsi aq command.
8557  **/
8558 static int i40e_add_vsi(struct i40e_vsi *vsi)
8559 {
8560         int ret = -ENODEV;
8561         struct i40e_mac_filter *f, *ftmp;
8562         struct i40e_pf *pf = vsi->back;
8563         struct i40e_hw *hw = &pf->hw;
8564         struct i40e_vsi_context ctxt;
8565         u8 enabled_tc = 0x1; /* TC0 enabled */
8566         int f_count = 0;
8567
8568         memset(&ctxt, 0, sizeof(ctxt));
8569         switch (vsi->type) {
8570         case I40E_VSI_MAIN:
8571                 /* The PF's main VSI is already setup as part of the
8572                  * device initialization, so we'll not bother with
8573                  * the add_vsi call, but we will retrieve the current
8574                  * VSI context.
8575                  */
8576                 ctxt.seid = pf->main_vsi_seid;
8577                 ctxt.pf_num = pf->hw.pf_id;
8578                 ctxt.vf_num = 0;
8579                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8580                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8581                 if (ret) {
8582                         dev_info(&pf->pdev->dev,
8583                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8584                                  i40e_stat_str(&pf->hw, ret),
8585                                  i40e_aq_str(&pf->hw,
8586                                              pf->hw.aq.asq_last_status));
8587                         return -ENOENT;
8588                 }
8589                 vsi->info = ctxt.info;
8590                 vsi->info.valid_sections = 0;
8591
8592                 vsi->seid = ctxt.seid;
8593                 vsi->id = ctxt.vsi_number;
8594
8595                 enabled_tc = i40e_pf_get_tc_map(pf);
8596
8597                 /* MFP mode setup queue map and update VSI */
8598                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8599                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8600                         memset(&ctxt, 0, sizeof(ctxt));
8601                         ctxt.seid = pf->main_vsi_seid;
8602                         ctxt.pf_num = pf->hw.pf_id;
8603                         ctxt.vf_num = 0;
8604                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8605                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8606                         if (ret) {
8607                                 dev_info(&pf->pdev->dev,
8608                                          "update vsi failed, err %s aq_err %s\n",
8609                                          i40e_stat_str(&pf->hw, ret),
8610                                          i40e_aq_str(&pf->hw,
8611                                                     pf->hw.aq.asq_last_status));
8612                                 ret = -ENOENT;
8613                                 goto err;
8614                         }
8615                         /* update the local VSI info queue map */
8616                         i40e_vsi_update_queue_map(vsi, &ctxt);
8617                         vsi->info.valid_sections = 0;
8618                 } else {
8619                         /* Default/Main VSI is only enabled for TC0
8620                          * reconfigure it to enable all TCs that are
8621                          * available on the port in SFP mode.
8622                          * For MFP case the iSCSI PF would use this
8623                          * flow to enable LAN+iSCSI TC.
8624                          */
8625                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8626                         if (ret) {
8627                                 dev_info(&pf->pdev->dev,
8628                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8629                                          enabled_tc,
8630                                          i40e_stat_str(&pf->hw, ret),
8631                                          i40e_aq_str(&pf->hw,
8632                                                     pf->hw.aq.asq_last_status));
8633                                 ret = -ENOENT;
8634                         }
8635                 }
8636                 break;
8637
8638         case I40E_VSI_FDIR:
8639                 ctxt.pf_num = hw->pf_id;
8640                 ctxt.vf_num = 0;
8641                 ctxt.uplink_seid = vsi->uplink_seid;
8642                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8643                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8644                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8645                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8646                         ctxt.info.valid_sections |=
8647                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8648                         ctxt.info.switch_id =
8649                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8650                 }
8651                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8652                 break;
8653
8654         case I40E_VSI_VMDQ2:
8655                 ctxt.pf_num = hw->pf_id;
8656                 ctxt.vf_num = 0;
8657                 ctxt.uplink_seid = vsi->uplink_seid;
8658                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8659                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8660
8661                 /* This VSI is connected to VEB so the switch_id
8662                  * should be set to zero by default.
8663                  */
8664                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8665                         ctxt.info.valid_sections |=
8666                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8667                         ctxt.info.switch_id =
8668                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8669                 }
8670
8671                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8672                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8673                 break;
8674
8675         case I40E_VSI_SRIOV:
8676                 ctxt.pf_num = hw->pf_id;
8677                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8678                 ctxt.uplink_seid = vsi->uplink_seid;
8679                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8680                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8681
8682                 /* This VSI is connected to VEB so the switch_id
8683                  * should be set to zero by default.
8684                  */
8685                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8686                         ctxt.info.valid_sections |=
8687                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8688                         ctxt.info.switch_id =
8689                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8690                 }
8691
8692                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8693                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8694                 if (pf->vf[vsi->vf_id].spoofchk) {
8695                         ctxt.info.valid_sections |=
8696                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8697                         ctxt.info.sec_flags |=
8698                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8699                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8700                 }
8701                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8702                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8703                 break;
8704
8705 #ifdef I40E_FCOE
8706         case I40E_VSI_FCOE:
8707                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8708                 if (ret) {
8709                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8710                         return ret;
8711                 }
8712                 break;
8713
8714 #endif /* I40E_FCOE */
8715         default:
8716                 return -ENODEV;
8717         }
8718
8719         if (vsi->type != I40E_VSI_MAIN) {
8720                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8721                 if (ret) {
8722                         dev_info(&vsi->back->pdev->dev,
8723                                  "add vsi failed, err %s aq_err %s\n",
8724                                  i40e_stat_str(&pf->hw, ret),
8725                                  i40e_aq_str(&pf->hw,
8726                                              pf->hw.aq.asq_last_status));
8727                         ret = -ENOENT;
8728                         goto err;
8729                 }
8730                 vsi->info = ctxt.info;
8731                 vsi->info.valid_sections = 0;
8732                 vsi->seid = ctxt.seid;
8733                 vsi->id = ctxt.vsi_number;
8734         }
8735
8736         /* If macvlan filters already exist, force them to get loaded */
8737         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8738                 f->changed = true;
8739                 f_count++;
8740
8741                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8742                         struct i40e_aqc_remove_macvlan_element_data element;
8743
8744                         memset(&element, 0, sizeof(element));
8745                         ether_addr_copy(element.mac_addr, f->macaddr);
8746                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8747                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8748                                                      &element, 1, NULL);
8749                         if (ret) {
8750                                 /* some older FW has a different default */
8751                                 element.flags |=
8752                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8753                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8754                                                        &element, 1, NULL);
8755                         }
8756
8757                         i40e_aq_mac_address_write(hw,
8758                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8759                                                   f->macaddr, NULL);
8760                 }
8761         }
8762         if (f_count) {
8763                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8764                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8765         }
8766
8767         /* Update VSI BW information */
8768         ret = i40e_vsi_get_bw_info(vsi);
8769         if (ret) {
8770                 dev_info(&pf->pdev->dev,
8771                          "couldn't get vsi bw info, err %s aq_err %s\n",
8772                          i40e_stat_str(&pf->hw, ret),
8773                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8774                 /* VSI is already added so not tearing that up */
8775                 ret = 0;
8776         }
8777
8778 err:
8779         return ret;
8780 }
8781
8782 /**
8783  * i40e_vsi_release - Delete a VSI and free its resources
8784  * @vsi: the VSI being removed
8785  *
8786  * Returns 0 on success or < 0 on error
8787  **/
8788 int i40e_vsi_release(struct i40e_vsi *vsi)
8789 {
8790         struct i40e_mac_filter *f, *ftmp;
8791         struct i40e_veb *veb = NULL;
8792         struct i40e_pf *pf;
8793         u16 uplink_seid;
8794         int i, n;
8795
8796         pf = vsi->back;
8797
8798         /* release of a VEB-owner or last VSI is not allowed */
8799         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8800                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8801                          vsi->seid, vsi->uplink_seid);
8802                 return -ENODEV;
8803         }
8804         if (vsi == pf->vsi[pf->lan_vsi] &&
8805             !test_bit(__I40E_DOWN, &pf->state)) {
8806                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8807                 return -ENODEV;
8808         }
8809
8810         uplink_seid = vsi->uplink_seid;
8811         if (vsi->type != I40E_VSI_SRIOV) {
8812                 if (vsi->netdev_registered) {
8813                         vsi->netdev_registered = false;
8814                         if (vsi->netdev) {
8815                                 /* results in a call to i40e_close() */
8816                                 unregister_netdev(vsi->netdev);
8817                         }
8818                 } else {
8819                         i40e_vsi_close(vsi);
8820                 }
8821                 i40e_vsi_disable_irq(vsi);
8822         }
8823
8824         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8825                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8826                                 f->is_vf, f->is_netdev);
8827         i40e_sync_vsi_filters(vsi, false);
8828
8829         i40e_vsi_delete(vsi);
8830         i40e_vsi_free_q_vectors(vsi);
8831         if (vsi->netdev) {
8832                 free_netdev(vsi->netdev);
8833                 vsi->netdev = NULL;
8834         }
8835         i40e_vsi_clear_rings(vsi);
8836         i40e_vsi_clear(vsi);
8837
8838         /* If this was the last thing on the VEB, except for the
8839          * controlling VSI, remove the VEB, which puts the controlling
8840          * VSI onto the next level down in the switch.
8841          *
8842          * Well, okay, there's one more exception here: don't remove
8843          * the orphan VEBs yet.  We'll wait for an explicit remove request
8844          * from up the network stack.
8845          */
8846         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8847                 if (pf->vsi[i] &&
8848                     pf->vsi[i]->uplink_seid == uplink_seid &&
8849                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8850                         n++;      /* count the VSIs */
8851                 }
8852         }
8853         for (i = 0; i < I40E_MAX_VEB; i++) {
8854                 if (!pf->veb[i])
8855                         continue;
8856                 if (pf->veb[i]->uplink_seid == uplink_seid)
8857                         n++;     /* count the VEBs */
8858                 if (pf->veb[i]->seid == uplink_seid)
8859                         veb = pf->veb[i];
8860         }
8861         if (n == 0 && veb && veb->uplink_seid != 0)
8862                 i40e_veb_release(veb);
8863
8864         return 0;
8865 }
8866
8867 /**
8868  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8869  * @vsi: ptr to the VSI
8870  *
8871  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8872  * corresponding SW VSI structure and initializes num_queue_pairs for the
8873  * newly allocated VSI.
8874  *
8875  * Returns 0 on success or negative on failure
8876  **/
8877 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8878 {
8879         int ret = -ENOENT;
8880         struct i40e_pf *pf = vsi->back;
8881
8882         if (vsi->q_vectors[0]) {
8883                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8884                          vsi->seid);
8885                 return -EEXIST;
8886         }
8887
8888         if (vsi->base_vector) {
8889                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8890                          vsi->seid, vsi->base_vector);
8891                 return -EEXIST;
8892         }
8893
8894         ret = i40e_vsi_alloc_q_vectors(vsi);
8895         if (ret) {
8896                 dev_info(&pf->pdev->dev,
8897                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8898                          vsi->num_q_vectors, vsi->seid, ret);
8899                 vsi->num_q_vectors = 0;
8900                 goto vector_setup_out;
8901         }
8902
8903         /* In Legacy mode, we do not have to get any other vector since we
8904          * piggyback on the misc/ICR0 for queue interrupts.
8905         */
8906         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8907                 return ret;
8908         if (vsi->num_q_vectors)
8909                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8910                                                  vsi->num_q_vectors, vsi->idx);
8911         if (vsi->base_vector < 0) {
8912                 dev_info(&pf->pdev->dev,
8913                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8914                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8915                 i40e_vsi_free_q_vectors(vsi);
8916                 ret = -ENOENT;
8917                 goto vector_setup_out;
8918         }
8919
8920 vector_setup_out:
8921         return ret;
8922 }
8923
8924 /**
8925  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8926  * @vsi: pointer to the vsi.
8927  *
8928  * This re-allocates a vsi's queue resources.
8929  *
8930  * Returns pointer to the successfully allocated and configured VSI sw struct
8931  * on success, otherwise returns NULL on failure.
8932  **/
8933 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8934 {
8935         struct i40e_pf *pf = vsi->back;
8936         u8 enabled_tc;
8937         int ret;
8938
8939         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8940         i40e_vsi_clear_rings(vsi);
8941
8942         i40e_vsi_free_arrays(vsi, false);
8943         i40e_set_num_rings_in_vsi(vsi);
8944         ret = i40e_vsi_alloc_arrays(vsi, false);
8945         if (ret)
8946                 goto err_vsi;
8947
8948         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8949         if (ret < 0) {
8950                 dev_info(&pf->pdev->dev,
8951                          "failed to get tracking for %d queues for VSI %d err %d\n",
8952                          vsi->alloc_queue_pairs, vsi->seid, ret);
8953                 goto err_vsi;
8954         }
8955         vsi->base_queue = ret;
8956
8957         /* Update the FW view of the VSI. Force a reset of TC and queue
8958          * layout configurations.
8959          */
8960         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8961         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8962         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8963         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8964
8965         /* assign it some queues */
8966         ret = i40e_alloc_rings(vsi);
8967         if (ret)
8968                 goto err_rings;
8969
8970         /* map all of the rings to the q_vectors */
8971         i40e_vsi_map_rings_to_vectors(vsi);
8972         return vsi;
8973
8974 err_rings:
8975         i40e_vsi_free_q_vectors(vsi);
8976         if (vsi->netdev_registered) {
8977                 vsi->netdev_registered = false;
8978                 unregister_netdev(vsi->netdev);
8979                 free_netdev(vsi->netdev);
8980                 vsi->netdev = NULL;
8981         }
8982         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8983 err_vsi:
8984         i40e_vsi_clear(vsi);
8985         return NULL;
8986 }
8987
8988 /**
8989  * i40e_vsi_setup - Set up a VSI by a given type
8990  * @pf: board private structure
8991  * @type: VSI type
8992  * @uplink_seid: the switch element to link to
8993  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8994  *
8995  * This allocates the sw VSI structure and its queue resources, then add a VSI
8996  * to the identified VEB.
8997  *
8998  * Returns pointer to the successfully allocated and configure VSI sw struct on
8999  * success, otherwise returns NULL on failure.
9000  **/
9001 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9002                                 u16 uplink_seid, u32 param1)
9003 {
9004         struct i40e_vsi *vsi = NULL;
9005         struct i40e_veb *veb = NULL;
9006         int ret, i;
9007         int v_idx;
9008
9009         /* The requested uplink_seid must be either
9010          *     - the PF's port seid
9011          *              no VEB is needed because this is the PF
9012          *              or this is a Flow Director special case VSI
9013          *     - seid of an existing VEB
9014          *     - seid of a VSI that owns an existing VEB
9015          *     - seid of a VSI that doesn't own a VEB
9016          *              a new VEB is created and the VSI becomes the owner
9017          *     - seid of the PF VSI, which is what creates the first VEB
9018          *              this is a special case of the previous
9019          *
9020          * Find which uplink_seid we were given and create a new VEB if needed
9021          */
9022         for (i = 0; i < I40E_MAX_VEB; i++) {
9023                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9024                         veb = pf->veb[i];
9025                         break;
9026                 }
9027         }
9028
9029         if (!veb && uplink_seid != pf->mac_seid) {
9030
9031                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9032                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9033                                 vsi = pf->vsi[i];
9034                                 break;
9035                         }
9036                 }
9037                 if (!vsi) {
9038                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9039                                  uplink_seid);
9040                         return NULL;
9041                 }
9042
9043                 if (vsi->uplink_seid == pf->mac_seid)
9044                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9045                                              vsi->tc_config.enabled_tc);
9046                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9047                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9048                                              vsi->tc_config.enabled_tc);
9049                 if (veb) {
9050                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9051                                 dev_info(&vsi->back->pdev->dev,
9052                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9053                                 return NULL;
9054                         }
9055                         /* We come up by default in VEPA mode if SRIOV is not
9056                          * already enabled, in which case we can't force VEPA
9057                          * mode.
9058                          */
9059                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9060                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9061                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9062                         }
9063                         i40e_config_bridge_mode(veb);
9064                 }
9065                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9066                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9067                                 veb = pf->veb[i];
9068                 }
9069                 if (!veb) {
9070                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9071                         return NULL;
9072                 }
9073
9074                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9075                 uplink_seid = veb->seid;
9076         }
9077
9078         /* get vsi sw struct */
9079         v_idx = i40e_vsi_mem_alloc(pf, type);
9080         if (v_idx < 0)
9081                 goto err_alloc;
9082         vsi = pf->vsi[v_idx];
9083         if (!vsi)
9084                 goto err_alloc;
9085         vsi->type = type;
9086         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9087
9088         if (type == I40E_VSI_MAIN)
9089                 pf->lan_vsi = v_idx;
9090         else if (type == I40E_VSI_SRIOV)
9091                 vsi->vf_id = param1;
9092         /* assign it some queues */
9093         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9094                                 vsi->idx);
9095         if (ret < 0) {
9096                 dev_info(&pf->pdev->dev,
9097                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9098                          vsi->alloc_queue_pairs, vsi->seid, ret);
9099                 goto err_vsi;
9100         }
9101         vsi->base_queue = ret;
9102
9103         /* get a VSI from the hardware */
9104         vsi->uplink_seid = uplink_seid;
9105         ret = i40e_add_vsi(vsi);
9106         if (ret)
9107                 goto err_vsi;
9108
9109         switch (vsi->type) {
9110         /* setup the netdev if needed */
9111         case I40E_VSI_MAIN:
9112         case I40E_VSI_VMDQ2:
9113         case I40E_VSI_FCOE:
9114                 ret = i40e_config_netdev(vsi);
9115                 if (ret)
9116                         goto err_netdev;
9117                 ret = register_netdev(vsi->netdev);
9118                 if (ret)
9119                         goto err_netdev;
9120                 vsi->netdev_registered = true;
9121                 netif_carrier_off(vsi->netdev);
9122 #ifdef CONFIG_I40E_DCB
9123                 /* Setup DCB netlink interface */
9124                 i40e_dcbnl_setup(vsi);
9125 #endif /* CONFIG_I40E_DCB */
9126                 /* fall through */
9127
9128         case I40E_VSI_FDIR:
9129                 /* set up vectors and rings if needed */
9130                 ret = i40e_vsi_setup_vectors(vsi);
9131                 if (ret)
9132                         goto err_msix;
9133
9134                 ret = i40e_alloc_rings(vsi);
9135                 if (ret)
9136                         goto err_rings;
9137
9138                 /* map all of the rings to the q_vectors */
9139                 i40e_vsi_map_rings_to_vectors(vsi);
9140
9141                 i40e_vsi_reset_stats(vsi);
9142                 break;
9143
9144         default:
9145                 /* no netdev or rings for the other VSI types */
9146                 break;
9147         }
9148
9149         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9150             (vsi->type == I40E_VSI_VMDQ2)) {
9151                 ret = i40e_vsi_config_rss(vsi);
9152         }
9153         return vsi;
9154
9155 err_rings:
9156         i40e_vsi_free_q_vectors(vsi);
9157 err_msix:
9158         if (vsi->netdev_registered) {
9159                 vsi->netdev_registered = false;
9160                 unregister_netdev(vsi->netdev);
9161                 free_netdev(vsi->netdev);
9162                 vsi->netdev = NULL;
9163         }
9164 err_netdev:
9165         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9166 err_vsi:
9167         i40e_vsi_clear(vsi);
9168 err_alloc:
9169         return NULL;
9170 }
9171
9172 /**
9173  * i40e_veb_get_bw_info - Query VEB BW information
9174  * @veb: the veb to query
9175  *
9176  * Query the Tx scheduler BW configuration data for given VEB
9177  **/
9178 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9179 {
9180         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9181         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9182         struct i40e_pf *pf = veb->pf;
9183         struct i40e_hw *hw = &pf->hw;
9184         u32 tc_bw_max;
9185         int ret = 0;
9186         int i;
9187
9188         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9189                                                   &bw_data, NULL);
9190         if (ret) {
9191                 dev_info(&pf->pdev->dev,
9192                          "query veb bw config failed, err %s aq_err %s\n",
9193                          i40e_stat_str(&pf->hw, ret),
9194                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9195                 goto out;
9196         }
9197
9198         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9199                                                    &ets_data, NULL);
9200         if (ret) {
9201                 dev_info(&pf->pdev->dev,
9202                          "query veb bw ets config failed, err %s aq_err %s\n",
9203                          i40e_stat_str(&pf->hw, ret),
9204                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9205                 goto out;
9206         }
9207
9208         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9209         veb->bw_max_quanta = ets_data.tc_bw_max;
9210         veb->is_abs_credits = bw_data.absolute_credits_enable;
9211         veb->enabled_tc = ets_data.tc_valid_bits;
9212         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9213                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9214         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9215                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9216                 veb->bw_tc_limit_credits[i] =
9217                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9218                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9219         }
9220
9221 out:
9222         return ret;
9223 }
9224
9225 /**
9226  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9227  * @pf: board private structure
9228  *
9229  * On error: returns error code (negative)
9230  * On success: returns vsi index in PF (positive)
9231  **/
9232 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9233 {
9234         int ret = -ENOENT;
9235         struct i40e_veb *veb;
9236         int i;
9237
9238         /* Need to protect the allocation of switch elements at the PF level */
9239         mutex_lock(&pf->switch_mutex);
9240
9241         /* VEB list may be fragmented if VEB creation/destruction has
9242          * been happening.  We can afford to do a quick scan to look
9243          * for any free slots in the list.
9244          *
9245          * find next empty veb slot, looping back around if necessary
9246          */
9247         i = 0;
9248         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9249                 i++;
9250         if (i >= I40E_MAX_VEB) {
9251                 ret = -ENOMEM;
9252                 goto err_alloc_veb;  /* out of VEB slots! */
9253         }
9254
9255         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9256         if (!veb) {
9257                 ret = -ENOMEM;
9258                 goto err_alloc_veb;
9259         }
9260         veb->pf = pf;
9261         veb->idx = i;
9262         veb->enabled_tc = 1;
9263
9264         pf->veb[i] = veb;
9265         ret = i;
9266 err_alloc_veb:
9267         mutex_unlock(&pf->switch_mutex);
9268         return ret;
9269 }
9270
9271 /**
9272  * i40e_switch_branch_release - Delete a branch of the switch tree
9273  * @branch: where to start deleting
9274  *
9275  * This uses recursion to find the tips of the branch to be
9276  * removed, deleting until we get back to and can delete this VEB.
9277  **/
9278 static void i40e_switch_branch_release(struct i40e_veb *branch)
9279 {
9280         struct i40e_pf *pf = branch->pf;
9281         u16 branch_seid = branch->seid;
9282         u16 veb_idx = branch->idx;
9283         int i;
9284
9285         /* release any VEBs on this VEB - RECURSION */
9286         for (i = 0; i < I40E_MAX_VEB; i++) {
9287                 if (!pf->veb[i])
9288                         continue;
9289                 if (pf->veb[i]->uplink_seid == branch->seid)
9290                         i40e_switch_branch_release(pf->veb[i]);
9291         }
9292
9293         /* Release the VSIs on this VEB, but not the owner VSI.
9294          *
9295          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9296          *       the VEB itself, so don't use (*branch) after this loop.
9297          */
9298         for (i = 0; i < pf->num_alloc_vsi; i++) {
9299                 if (!pf->vsi[i])
9300                         continue;
9301                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9302                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9303                         i40e_vsi_release(pf->vsi[i]);
9304                 }
9305         }
9306
9307         /* There's one corner case where the VEB might not have been
9308          * removed, so double check it here and remove it if needed.
9309          * This case happens if the veb was created from the debugfs
9310          * commands and no VSIs were added to it.
9311          */
9312         if (pf->veb[veb_idx])
9313                 i40e_veb_release(pf->veb[veb_idx]);
9314 }
9315
9316 /**
9317  * i40e_veb_clear - remove veb struct
9318  * @veb: the veb to remove
9319  **/
9320 static void i40e_veb_clear(struct i40e_veb *veb)
9321 {
9322         if (!veb)
9323                 return;
9324
9325         if (veb->pf) {
9326                 struct i40e_pf *pf = veb->pf;
9327
9328                 mutex_lock(&pf->switch_mutex);
9329                 if (pf->veb[veb->idx] == veb)
9330                         pf->veb[veb->idx] = NULL;
9331                 mutex_unlock(&pf->switch_mutex);
9332         }
9333
9334         kfree(veb);
9335 }
9336
9337 /**
9338  * i40e_veb_release - Delete a VEB and free its resources
9339  * @veb: the VEB being removed
9340  **/
9341 void i40e_veb_release(struct i40e_veb *veb)
9342 {
9343         struct i40e_vsi *vsi = NULL;
9344         struct i40e_pf *pf;
9345         int i, n = 0;
9346
9347         pf = veb->pf;
9348
9349         /* find the remaining VSI and check for extras */
9350         for (i = 0; i < pf->num_alloc_vsi; i++) {
9351                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9352                         n++;
9353                         vsi = pf->vsi[i];
9354                 }
9355         }
9356         if (n != 1) {
9357                 dev_info(&pf->pdev->dev,
9358                          "can't remove VEB %d with %d VSIs left\n",
9359                          veb->seid, n);
9360                 return;
9361         }
9362
9363         /* move the remaining VSI to uplink veb */
9364         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9365         if (veb->uplink_seid) {
9366                 vsi->uplink_seid = veb->uplink_seid;
9367                 if (veb->uplink_seid == pf->mac_seid)
9368                         vsi->veb_idx = I40E_NO_VEB;
9369                 else
9370                         vsi->veb_idx = veb->veb_idx;
9371         } else {
9372                 /* floating VEB */
9373                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9374                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9375         }
9376
9377         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9378         i40e_veb_clear(veb);
9379 }
9380
9381 /**
9382  * i40e_add_veb - create the VEB in the switch
9383  * @veb: the VEB to be instantiated
9384  * @vsi: the controlling VSI
9385  **/
9386 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9387 {
9388         struct i40e_pf *pf = veb->pf;
9389         bool is_default = veb->pf->cur_promisc;
9390         bool is_cloud = false;
9391         int ret;
9392
9393         /* get a VEB from the hardware */
9394         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9395                               veb->enabled_tc, is_default,
9396                               is_cloud, &veb->seid, NULL);
9397         if (ret) {
9398                 dev_info(&pf->pdev->dev,
9399                          "couldn't add VEB, err %s aq_err %s\n",
9400                          i40e_stat_str(&pf->hw, ret),
9401                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9402                 return -EPERM;
9403         }
9404
9405         /* get statistics counter */
9406         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9407                                          &veb->stats_idx, NULL, NULL, NULL);
9408         if (ret) {
9409                 dev_info(&pf->pdev->dev,
9410                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9411                          i40e_stat_str(&pf->hw, ret),
9412                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9413                 return -EPERM;
9414         }
9415         ret = i40e_veb_get_bw_info(veb);
9416         if (ret) {
9417                 dev_info(&pf->pdev->dev,
9418                          "couldn't get VEB bw info, err %s aq_err %s\n",
9419                          i40e_stat_str(&pf->hw, ret),
9420                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9421                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9422                 return -ENOENT;
9423         }
9424
9425         vsi->uplink_seid = veb->seid;
9426         vsi->veb_idx = veb->idx;
9427         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9428
9429         return 0;
9430 }
9431
9432 /**
9433  * i40e_veb_setup - Set up a VEB
9434  * @pf: board private structure
9435  * @flags: VEB setup flags
9436  * @uplink_seid: the switch element to link to
9437  * @vsi_seid: the initial VSI seid
9438  * @enabled_tc: Enabled TC bit-map
9439  *
9440  * This allocates the sw VEB structure and links it into the switch
9441  * It is possible and legal for this to be a duplicate of an already
9442  * existing VEB.  It is also possible for both uplink and vsi seids
9443  * to be zero, in order to create a floating VEB.
9444  *
9445  * Returns pointer to the successfully allocated VEB sw struct on
9446  * success, otherwise returns NULL on failure.
9447  **/
9448 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9449                                 u16 uplink_seid, u16 vsi_seid,
9450                                 u8 enabled_tc)
9451 {
9452         struct i40e_veb *veb, *uplink_veb = NULL;
9453         int vsi_idx, veb_idx;
9454         int ret;
9455
9456         /* if one seid is 0, the other must be 0 to create a floating relay */
9457         if ((uplink_seid == 0 || vsi_seid == 0) &&
9458             (uplink_seid + vsi_seid != 0)) {
9459                 dev_info(&pf->pdev->dev,
9460                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9461                          uplink_seid, vsi_seid);
9462                 return NULL;
9463         }
9464
9465         /* make sure there is such a vsi and uplink */
9466         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9467                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9468                         break;
9469         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9470                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9471                          vsi_seid);
9472                 return NULL;
9473         }
9474
9475         if (uplink_seid && uplink_seid != pf->mac_seid) {
9476                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9477                         if (pf->veb[veb_idx] &&
9478                             pf->veb[veb_idx]->seid == uplink_seid) {
9479                                 uplink_veb = pf->veb[veb_idx];
9480                                 break;
9481                         }
9482                 }
9483                 if (!uplink_veb) {
9484                         dev_info(&pf->pdev->dev,
9485                                  "uplink seid %d not found\n", uplink_seid);
9486                         return NULL;
9487                 }
9488         }
9489
9490         /* get veb sw struct */
9491         veb_idx = i40e_veb_mem_alloc(pf);
9492         if (veb_idx < 0)
9493                 goto err_alloc;
9494         veb = pf->veb[veb_idx];
9495         veb->flags = flags;
9496         veb->uplink_seid = uplink_seid;
9497         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9498         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9499
9500         /* create the VEB in the switch */
9501         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9502         if (ret)
9503                 goto err_veb;
9504         if (vsi_idx == pf->lan_vsi)
9505                 pf->lan_veb = veb->idx;
9506
9507         return veb;
9508
9509 err_veb:
9510         i40e_veb_clear(veb);
9511 err_alloc:
9512         return NULL;
9513 }
9514
9515 /**
9516  * i40e_setup_pf_switch_element - set PF vars based on switch type
9517  * @pf: board private structure
9518  * @ele: element we are building info from
9519  * @num_reported: total number of elements
9520  * @printconfig: should we print the contents
9521  *
9522  * helper function to assist in extracting a few useful SEID values.
9523  **/
9524 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9525                                 struct i40e_aqc_switch_config_element_resp *ele,
9526                                 u16 num_reported, bool printconfig)
9527 {
9528         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9529         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9530         u8 element_type = ele->element_type;
9531         u16 seid = le16_to_cpu(ele->seid);
9532
9533         if (printconfig)
9534                 dev_info(&pf->pdev->dev,
9535                          "type=%d seid=%d uplink=%d downlink=%d\n",
9536                          element_type, seid, uplink_seid, downlink_seid);
9537
9538         switch (element_type) {
9539         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9540                 pf->mac_seid = seid;
9541                 break;
9542         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9543                 /* Main VEB? */
9544                 if (uplink_seid != pf->mac_seid)
9545                         break;
9546                 if (pf->lan_veb == I40E_NO_VEB) {
9547                         int v;
9548
9549                         /* find existing or else empty VEB */
9550                         for (v = 0; v < I40E_MAX_VEB; v++) {
9551                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9552                                         pf->lan_veb = v;
9553                                         break;
9554                                 }
9555                         }
9556                         if (pf->lan_veb == I40E_NO_VEB) {
9557                                 v = i40e_veb_mem_alloc(pf);
9558                                 if (v < 0)
9559                                         break;
9560                                 pf->lan_veb = v;
9561                         }
9562                 }
9563
9564                 pf->veb[pf->lan_veb]->seid = seid;
9565                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9566                 pf->veb[pf->lan_veb]->pf = pf;
9567                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9568                 break;
9569         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9570                 if (num_reported != 1)
9571                         break;
9572                 /* This is immediately after a reset so we can assume this is
9573                  * the PF's VSI
9574                  */
9575                 pf->mac_seid = uplink_seid;
9576                 pf->pf_seid = downlink_seid;
9577                 pf->main_vsi_seid = seid;
9578                 if (printconfig)
9579                         dev_info(&pf->pdev->dev,
9580                                  "pf_seid=%d main_vsi_seid=%d\n",
9581                                  pf->pf_seid, pf->main_vsi_seid);
9582                 break;
9583         case I40E_SWITCH_ELEMENT_TYPE_PF:
9584         case I40E_SWITCH_ELEMENT_TYPE_VF:
9585         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9586         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9587         case I40E_SWITCH_ELEMENT_TYPE_PE:
9588         case I40E_SWITCH_ELEMENT_TYPE_PA:
9589                 /* ignore these for now */
9590                 break;
9591         default:
9592                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9593                          element_type, seid);
9594                 break;
9595         }
9596 }
9597
9598 /**
9599  * i40e_fetch_switch_configuration - Get switch config from firmware
9600  * @pf: board private structure
9601  * @printconfig: should we print the contents
9602  *
9603  * Get the current switch configuration from the device and
9604  * extract a few useful SEID values.
9605  **/
9606 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9607 {
9608         struct i40e_aqc_get_switch_config_resp *sw_config;
9609         u16 next_seid = 0;
9610         int ret = 0;
9611         u8 *aq_buf;
9612         int i;
9613
9614         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9615         if (!aq_buf)
9616                 return -ENOMEM;
9617
9618         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9619         do {
9620                 u16 num_reported, num_total;
9621
9622                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9623                                                 I40E_AQ_LARGE_BUF,
9624                                                 &next_seid, NULL);
9625                 if (ret) {
9626                         dev_info(&pf->pdev->dev,
9627                                  "get switch config failed err %s aq_err %s\n",
9628                                  i40e_stat_str(&pf->hw, ret),
9629                                  i40e_aq_str(&pf->hw,
9630                                              pf->hw.aq.asq_last_status));
9631                         kfree(aq_buf);
9632                         return -ENOENT;
9633                 }
9634
9635                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9636                 num_total = le16_to_cpu(sw_config->header.num_total);
9637
9638                 if (printconfig)
9639                         dev_info(&pf->pdev->dev,
9640                                  "header: %d reported %d total\n",
9641                                  num_reported, num_total);
9642
9643                 for (i = 0; i < num_reported; i++) {
9644                         struct i40e_aqc_switch_config_element_resp *ele =
9645                                 &sw_config->element[i];
9646
9647                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9648                                                      printconfig);
9649                 }
9650         } while (next_seid != 0);
9651
9652         kfree(aq_buf);
9653         return ret;
9654 }
9655
9656 /**
9657  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9658  * @pf: board private structure
9659  * @reinit: if the Main VSI needs to re-initialized.
9660  *
9661  * Returns 0 on success, negative value on failure
9662  **/
9663 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9664 {
9665         int ret;
9666
9667         /* find out what's out there already */
9668         ret = i40e_fetch_switch_configuration(pf, false);
9669         if (ret) {
9670                 dev_info(&pf->pdev->dev,
9671                          "couldn't fetch switch config, err %s aq_err %s\n",
9672                          i40e_stat_str(&pf->hw, ret),
9673                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9674                 return ret;
9675         }
9676         i40e_pf_reset_stats(pf);
9677
9678         /* first time setup */
9679         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9680                 struct i40e_vsi *vsi = NULL;
9681                 u16 uplink_seid;
9682
9683                 /* Set up the PF VSI associated with the PF's main VSI
9684                  * that is already in the HW switch
9685                  */
9686                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9687                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9688                 else
9689                         uplink_seid = pf->mac_seid;
9690                 if (pf->lan_vsi == I40E_NO_VSI)
9691                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9692                 else if (reinit)
9693                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9694                 if (!vsi) {
9695                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9696                         i40e_fdir_teardown(pf);
9697                         return -EAGAIN;
9698                 }
9699         } else {
9700                 /* force a reset of TC and queue layout configurations */
9701                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9702                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9703                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9704                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9705         }
9706         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9707
9708         i40e_fdir_sb_setup(pf);
9709
9710         /* Setup static PF queue filter control settings */
9711         ret = i40e_setup_pf_filter_control(pf);
9712         if (ret) {
9713                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9714                          ret);
9715                 /* Failure here should not stop continuing other steps */
9716         }
9717
9718         /* enable RSS in the HW, even for only one queue, as the stack can use
9719          * the hash
9720          */
9721         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9722                 i40e_config_rss(pf);
9723
9724         /* fill in link information and enable LSE reporting */
9725         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9726         i40e_link_event(pf);
9727
9728         /* Initialize user-specific link properties */
9729         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9730                                   I40E_AQ_AN_COMPLETED) ? true : false);
9731
9732         i40e_ptp_init(pf);
9733
9734         return ret;
9735 }
9736
9737 /**
9738  * i40e_determine_queue_usage - Work out queue distribution
9739  * @pf: board private structure
9740  **/
9741 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9742 {
9743         int queues_left;
9744
9745         pf->num_lan_qps = 0;
9746 #ifdef I40E_FCOE
9747         pf->num_fcoe_qps = 0;
9748 #endif
9749
9750         /* Find the max queues to be put into basic use.  We'll always be
9751          * using TC0, whether or not DCB is running, and TC0 will get the
9752          * big RSS set.
9753          */
9754         queues_left = pf->hw.func_caps.num_tx_qp;
9755
9756         if ((queues_left == 1) ||
9757             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9758                 /* one qp for PF, no queues for anything else */
9759                 queues_left = 0;
9760                 pf->rss_size = pf->num_lan_qps = 1;
9761
9762                 /* make sure all the fancies are disabled */
9763                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9764 #ifdef I40E_FCOE
9765                                I40E_FLAG_FCOE_ENABLED   |
9766 #endif
9767                                I40E_FLAG_FD_SB_ENABLED  |
9768                                I40E_FLAG_FD_ATR_ENABLED |
9769                                I40E_FLAG_DCB_CAPABLE    |
9770                                I40E_FLAG_SRIOV_ENABLED  |
9771                                I40E_FLAG_VMDQ_ENABLED);
9772         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9773                                   I40E_FLAG_FD_SB_ENABLED |
9774                                   I40E_FLAG_FD_ATR_ENABLED |
9775                                   I40E_FLAG_DCB_CAPABLE))) {
9776                 /* one qp for PF */
9777                 pf->rss_size = pf->num_lan_qps = 1;
9778                 queues_left -= pf->num_lan_qps;
9779
9780                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9781 #ifdef I40E_FCOE
9782                                I40E_FLAG_FCOE_ENABLED   |
9783 #endif
9784                                I40E_FLAG_FD_SB_ENABLED  |
9785                                I40E_FLAG_FD_ATR_ENABLED |
9786                                I40E_FLAG_DCB_ENABLED    |
9787                                I40E_FLAG_VMDQ_ENABLED);
9788         } else {
9789                 /* Not enough queues for all TCs */
9790                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9791                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9792                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9793                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9794                 }
9795                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9796                                         num_online_cpus());
9797                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9798                                         pf->hw.func_caps.num_tx_qp);
9799
9800                 queues_left -= pf->num_lan_qps;
9801         }
9802
9803 #ifdef I40E_FCOE
9804         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9805                 if (I40E_DEFAULT_FCOE <= queues_left) {
9806                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9807                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9808                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9809                 } else {
9810                         pf->num_fcoe_qps = 0;
9811                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9812                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9813                 }
9814
9815                 queues_left -= pf->num_fcoe_qps;
9816         }
9817
9818 #endif
9819         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9820                 if (queues_left > 1) {
9821                         queues_left -= 1; /* save 1 queue for FD */
9822                 } else {
9823                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9824                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9825                 }
9826         }
9827
9828         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9829             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9830                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9831                                         (queues_left / pf->num_vf_qps));
9832                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9833         }
9834
9835         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9836             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9837                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9838                                           (queues_left / pf->num_vmdq_qps));
9839                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9840         }
9841
9842         pf->queues_left = queues_left;
9843 #ifdef I40E_FCOE
9844         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9845 #endif
9846 }
9847
9848 /**
9849  * i40e_setup_pf_filter_control - Setup PF static filter control
9850  * @pf: PF to be setup
9851  *
9852  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9853  * settings. If PE/FCoE are enabled then it will also set the per PF
9854  * based filter sizes required for them. It also enables Flow director,
9855  * ethertype and macvlan type filter settings for the pf.
9856  *
9857  * Returns 0 on success, negative on failure
9858  **/
9859 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9860 {
9861         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9862
9863         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9864
9865         /* Flow Director is enabled */
9866         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9867                 settings->enable_fdir = true;
9868
9869         /* Ethtype and MACVLAN filters enabled for PF */
9870         settings->enable_ethtype = true;
9871         settings->enable_macvlan = true;
9872
9873         if (i40e_set_filter_control(&pf->hw, settings))
9874                 return -ENOENT;
9875
9876         return 0;
9877 }
9878
9879 #define INFO_STRING_LEN 255
9880 static void i40e_print_features(struct i40e_pf *pf)
9881 {
9882         struct i40e_hw *hw = &pf->hw;
9883         char *buf, *string;
9884
9885         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9886         if (!string) {
9887                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9888                 return;
9889         }
9890
9891         buf = string;
9892
9893         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9894 #ifdef CONFIG_PCI_IOV
9895         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9896 #endif
9897         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9898                        pf->hw.func_caps.num_vsis,
9899                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9900                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9901
9902         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9903                 buf += sprintf(buf, "RSS ");
9904         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9905                 buf += sprintf(buf, "FD_ATR ");
9906         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9907                 buf += sprintf(buf, "FD_SB ");
9908                 buf += sprintf(buf, "NTUPLE ");
9909         }
9910         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9911                 buf += sprintf(buf, "DCB ");
9912         if (pf->flags & I40E_FLAG_PTP)
9913                 buf += sprintf(buf, "PTP ");
9914 #ifdef I40E_FCOE
9915         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9916                 buf += sprintf(buf, "FCOE ");
9917 #endif
9918
9919         BUG_ON(buf > (string + INFO_STRING_LEN));
9920         dev_info(&pf->pdev->dev, "%s\n", string);
9921         kfree(string);
9922 }
9923
9924 /**
9925  * i40e_probe - Device initialization routine
9926  * @pdev: PCI device information struct
9927  * @ent: entry in i40e_pci_tbl
9928  *
9929  * i40e_probe initializes a PF identified by a pci_dev structure.
9930  * The OS initialization, configuring of the PF private structure,
9931  * and a hardware reset occur.
9932  *
9933  * Returns 0 on success, negative on failure
9934  **/
9935 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9936 {
9937         struct i40e_aq_get_phy_abilities_resp abilities;
9938         struct i40e_pf *pf;
9939         struct i40e_hw *hw;
9940         static u16 pfs_found;
9941         u16 wol_nvm_bits;
9942         u16 link_status;
9943         int err = 0;
9944         u32 len;
9945         u32 i;
9946
9947         err = pci_enable_device_mem(pdev);
9948         if (err)
9949                 return err;
9950
9951         /* set up for high or low dma */
9952         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9953         if (err) {
9954                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9955                 if (err) {
9956                         dev_err(&pdev->dev,
9957                                 "DMA configuration failed: 0x%x\n", err);
9958                         goto err_dma;
9959                 }
9960         }
9961
9962         /* set up pci connections */
9963         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9964                                            IORESOURCE_MEM), i40e_driver_name);
9965         if (err) {
9966                 dev_info(&pdev->dev,
9967                          "pci_request_selected_regions failed %d\n", err);
9968                 goto err_pci_reg;
9969         }
9970
9971         pci_enable_pcie_error_reporting(pdev);
9972         pci_set_master(pdev);
9973
9974         /* Now that we have a PCI connection, we need to do the
9975          * low level device setup.  This is primarily setting up
9976          * the Admin Queue structures and then querying for the
9977          * device's current profile information.
9978          */
9979         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9980         if (!pf) {
9981                 err = -ENOMEM;
9982                 goto err_pf_alloc;
9983         }
9984         pf->next_vsi = 0;
9985         pf->pdev = pdev;
9986         set_bit(__I40E_DOWN, &pf->state);
9987
9988         hw = &pf->hw;
9989         hw->back = pf;
9990
9991         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
9992                                 I40E_MAX_CSR_SPACE);
9993
9994         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
9995         if (!hw->hw_addr) {
9996                 err = -EIO;
9997                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9998                          (unsigned int)pci_resource_start(pdev, 0),
9999                          pf->ioremap_len, err);
10000                 goto err_ioremap;
10001         }
10002         hw->vendor_id = pdev->vendor;
10003         hw->device_id = pdev->device;
10004         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10005         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10006         hw->subsystem_device_id = pdev->subsystem_device;
10007         hw->bus.device = PCI_SLOT(pdev->devfn);
10008         hw->bus.func = PCI_FUNC(pdev->devfn);
10009         pf->instance = pfs_found;
10010
10011         if (debug != -1) {
10012                 pf->msg_enable = pf->hw.debug_mask;
10013                 pf->msg_enable = debug;
10014         }
10015
10016         /* do a special CORER for clearing PXE mode once at init */
10017         if (hw->revision_id == 0 &&
10018             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10019                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10020                 i40e_flush(hw);
10021                 msleep(200);
10022                 pf->corer_count++;
10023
10024                 i40e_clear_pxe_mode(hw);
10025         }
10026
10027         /* Reset here to make sure all is clean and to define PF 'n' */
10028         i40e_clear_hw(hw);
10029         err = i40e_pf_reset(hw);
10030         if (err) {
10031                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10032                 goto err_pf_reset;
10033         }
10034         pf->pfr_count++;
10035
10036         hw->aq.num_arq_entries = I40E_AQ_LEN;
10037         hw->aq.num_asq_entries = I40E_AQ_LEN;
10038         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10039         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10040         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10041
10042         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10043                  "%s-%s:misc",
10044                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10045
10046         err = i40e_init_shared_code(hw);
10047         if (err) {
10048                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10049                          err);
10050                 goto err_pf_reset;
10051         }
10052
10053         /* set up a default setting for link flow control */
10054         pf->hw.fc.requested_mode = I40E_FC_NONE;
10055
10056         err = i40e_init_adminq(hw);
10057         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10058         if (err) {
10059                 dev_info(&pdev->dev,
10060                          "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
10061                 goto err_pf_reset;
10062         }
10063
10064         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10065             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10066                 dev_info(&pdev->dev,
10067                          "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
10068         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10069                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10070                 dev_info(&pdev->dev,
10071                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10072
10073         i40e_verify_eeprom(pf);
10074
10075         /* Rev 0 hardware was never productized */
10076         if (hw->revision_id < 1)
10077                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
10078
10079         i40e_clear_pxe_mode(hw);
10080         err = i40e_get_capabilities(pf);
10081         if (err)
10082                 goto err_adminq_setup;
10083
10084         err = i40e_sw_init(pf);
10085         if (err) {
10086                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10087                 goto err_sw_init;
10088         }
10089
10090         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10091                                 hw->func_caps.num_rx_qp,
10092                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10093         if (err) {
10094                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10095                 goto err_init_lan_hmc;
10096         }
10097
10098         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10099         if (err) {
10100                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10101                 err = -ENOENT;
10102                 goto err_configure_lan_hmc;
10103         }
10104
10105         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10106          * Ignore error return codes because if it was already disabled via
10107          * hardware settings this will fail
10108          */
10109         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10110             (pf->hw.aq.fw_maj_ver < 4)) {
10111                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10112                 i40e_aq_stop_lldp(hw, true, NULL);
10113         }
10114
10115         i40e_get_mac_addr(hw, hw->mac.addr);
10116         if (!is_valid_ether_addr(hw->mac.addr)) {
10117                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10118                 err = -EIO;
10119                 goto err_mac_addr;
10120         }
10121         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10122         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10123         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10124         if (is_valid_ether_addr(hw->mac.port_addr))
10125                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10126 #ifdef I40E_FCOE
10127         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10128         if (err)
10129                 dev_info(&pdev->dev,
10130                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10131         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10132                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10133                          hw->mac.san_addr);
10134                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10135         }
10136         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10137 #endif /* I40E_FCOE */
10138
10139         pci_set_drvdata(pdev, pf);
10140         pci_save_state(pdev);
10141 #ifdef CONFIG_I40E_DCB
10142         err = i40e_init_pf_dcb(pf);
10143         if (err) {
10144                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10145                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10146                 /* Continue without DCB enabled */
10147         }
10148 #endif /* CONFIG_I40E_DCB */
10149
10150         /* set up periodic task facility */
10151         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10152         pf->service_timer_period = HZ;
10153
10154         INIT_WORK(&pf->service_task, i40e_service_task);
10155         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10156         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10157
10158         /* NVM bit on means WoL disabled for the port */
10159         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10160         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10161                 pf->wol_en = false;
10162         else
10163                 pf->wol_en = true;
10164         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10165
10166         /* set up the main switch operations */
10167         i40e_determine_queue_usage(pf);
10168         err = i40e_init_interrupt_scheme(pf);
10169         if (err)
10170                 goto err_switch_setup;
10171
10172         /* The number of VSIs reported by the FW is the minimum guaranteed
10173          * to us; HW supports far more and we share the remaining pool with
10174          * the other PFs. We allocate space for more than the guarantee with
10175          * the understanding that we might not get them all later.
10176          */
10177         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10178                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10179         else
10180                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10181
10182         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10183         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10184         pf->vsi = kzalloc(len, GFP_KERNEL);
10185         if (!pf->vsi) {
10186                 err = -ENOMEM;
10187                 goto err_switch_setup;
10188         }
10189
10190 #ifdef CONFIG_PCI_IOV
10191         /* prep for VF support */
10192         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10193             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10194             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10195                 if (pci_num_vf(pdev))
10196                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10197         }
10198 #endif
10199         err = i40e_setup_pf_switch(pf, false);
10200         if (err) {
10201                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10202                 goto err_vsis;
10203         }
10204         /* if FDIR VSI was set up, start it now */
10205         for (i = 0; i < pf->num_alloc_vsi; i++) {
10206                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10207                         i40e_vsi_open(pf->vsi[i]);
10208                         break;
10209                 }
10210         }
10211
10212         /* driver is only interested in link up/down and module qualification
10213          * reports from firmware
10214          */
10215         err = i40e_aq_set_phy_int_mask(&pf->hw,
10216                                        I40E_AQ_EVENT_LINK_UPDOWN |
10217                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10218         if (err)
10219                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10220                          i40e_stat_str(&pf->hw, err),
10221                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10222
10223         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10224             (pf->hw.aq.fw_maj_ver < 4)) {
10225                 msleep(75);
10226                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10227                 if (err)
10228                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10229                                  i40e_stat_str(&pf->hw, err),
10230                                  i40e_aq_str(&pf->hw,
10231                                              pf->hw.aq.asq_last_status));
10232         }
10233         /* The main driver is (mostly) up and happy. We need to set this state
10234          * before setting up the misc vector or we get a race and the vector
10235          * ends up disabled forever.
10236          */
10237         clear_bit(__I40E_DOWN, &pf->state);
10238
10239         /* In case of MSIX we are going to setup the misc vector right here
10240          * to handle admin queue events etc. In case of legacy and MSI
10241          * the misc functionality and queue processing is combined in
10242          * the same vector and that gets setup at open.
10243          */
10244         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10245                 err = i40e_setup_misc_vector(pf);
10246                 if (err) {
10247                         dev_info(&pdev->dev,
10248                                  "setup of misc vector failed: %d\n", err);
10249                         goto err_vsis;
10250                 }
10251         }
10252
10253 #ifdef CONFIG_PCI_IOV
10254         /* prep for VF support */
10255         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10256             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10257             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10258                 u32 val;
10259
10260                 /* disable link interrupts for VFs */
10261                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10262                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10263                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10264                 i40e_flush(hw);
10265
10266                 if (pci_num_vf(pdev)) {
10267                         dev_info(&pdev->dev,
10268                                  "Active VFs found, allocating resources.\n");
10269                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10270                         if (err)
10271                                 dev_info(&pdev->dev,
10272                                          "Error %d allocating resources for existing VFs\n",
10273                                          err);
10274                 }
10275         }
10276 #endif /* CONFIG_PCI_IOV */
10277
10278         pfs_found++;
10279
10280         i40e_dbg_pf_init(pf);
10281
10282         /* tell the firmware that we're starting */
10283         i40e_send_version(pf);
10284
10285         /* since everything's happy, start the service_task timer */
10286         mod_timer(&pf->service_timer,
10287                   round_jiffies(jiffies + pf->service_timer_period));
10288
10289 #ifdef I40E_FCOE
10290         /* create FCoE interface */
10291         i40e_fcoe_vsi_setup(pf);
10292
10293 #endif
10294         /* Get the negotiated link width and speed from PCI config space */
10295         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10296
10297         i40e_set_pci_config_data(hw, link_status);
10298
10299         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10300                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10301                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10302                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10303                  "Unknown"),
10304                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10305                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10306                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10307                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10308                  "Unknown"));
10309
10310         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10311             hw->bus.speed < i40e_bus_speed_8000) {
10312                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10313                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10314         }
10315
10316         /* get the requested speeds from the fw */
10317         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10318         if (err)
10319                 dev_info(&pf->pdev->dev,
10320                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10321                          i40e_stat_str(&pf->hw, err),
10322                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10323         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10324
10325         /* print a string summarizing features */
10326         i40e_print_features(pf);
10327
10328         return 0;
10329
10330         /* Unwind what we've done if something failed in the setup */
10331 err_vsis:
10332         set_bit(__I40E_DOWN, &pf->state);
10333         i40e_clear_interrupt_scheme(pf);
10334         kfree(pf->vsi);
10335 err_switch_setup:
10336         i40e_reset_interrupt_capability(pf);
10337         del_timer_sync(&pf->service_timer);
10338 err_mac_addr:
10339 err_configure_lan_hmc:
10340         (void)i40e_shutdown_lan_hmc(hw);
10341 err_init_lan_hmc:
10342         kfree(pf->qp_pile);
10343 err_sw_init:
10344 err_adminq_setup:
10345         (void)i40e_shutdown_adminq(hw);
10346 err_pf_reset:
10347         iounmap(hw->hw_addr);
10348 err_ioremap:
10349         kfree(pf);
10350 err_pf_alloc:
10351         pci_disable_pcie_error_reporting(pdev);
10352         pci_release_selected_regions(pdev,
10353                                      pci_select_bars(pdev, IORESOURCE_MEM));
10354 err_pci_reg:
10355 err_dma:
10356         pci_disable_device(pdev);
10357         return err;
10358 }
10359
10360 /**
10361  * i40e_remove - Device removal routine
10362  * @pdev: PCI device information struct
10363  *
10364  * i40e_remove is called by the PCI subsystem to alert the driver
10365  * that is should release a PCI device.  This could be caused by a
10366  * Hot-Plug event, or because the driver is going to be removed from
10367  * memory.
10368  **/
10369 static void i40e_remove(struct pci_dev *pdev)
10370 {
10371         struct i40e_pf *pf = pci_get_drvdata(pdev);
10372         i40e_status ret_code;
10373         int i;
10374
10375         i40e_dbg_pf_exit(pf);
10376
10377         i40e_ptp_stop(pf);
10378
10379         /* no more scheduling of any task */
10380         set_bit(__I40E_DOWN, &pf->state);
10381         del_timer_sync(&pf->service_timer);
10382         cancel_work_sync(&pf->service_task);
10383         i40e_fdir_teardown(pf);
10384
10385         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10386                 i40e_free_vfs(pf);
10387                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10388         }
10389
10390         i40e_fdir_teardown(pf);
10391
10392         /* If there is a switch structure or any orphans, remove them.
10393          * This will leave only the PF's VSI remaining.
10394          */
10395         for (i = 0; i < I40E_MAX_VEB; i++) {
10396                 if (!pf->veb[i])
10397                         continue;
10398
10399                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10400                     pf->veb[i]->uplink_seid == 0)
10401                         i40e_switch_branch_release(pf->veb[i]);
10402         }
10403
10404         /* Now we can shutdown the PF's VSI, just before we kill
10405          * adminq and hmc.
10406          */
10407         if (pf->vsi[pf->lan_vsi])
10408                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10409
10410         /* shutdown and destroy the HMC */
10411         if (pf->hw.hmc.hmc_obj) {
10412                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10413                 if (ret_code)
10414                         dev_warn(&pdev->dev,
10415                                  "Failed to destroy the HMC resources: %d\n",
10416                                  ret_code);
10417         }
10418
10419         /* shutdown the adminq */
10420         ret_code = i40e_shutdown_adminq(&pf->hw);
10421         if (ret_code)
10422                 dev_warn(&pdev->dev,
10423                          "Failed to destroy the Admin Queue resources: %d\n",
10424                          ret_code);
10425
10426         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10427         i40e_clear_interrupt_scheme(pf);
10428         for (i = 0; i < pf->num_alloc_vsi; i++) {
10429                 if (pf->vsi[i]) {
10430                         i40e_vsi_clear_rings(pf->vsi[i]);
10431                         i40e_vsi_clear(pf->vsi[i]);
10432                         pf->vsi[i] = NULL;
10433                 }
10434         }
10435
10436         for (i = 0; i < I40E_MAX_VEB; i++) {
10437                 kfree(pf->veb[i]);
10438                 pf->veb[i] = NULL;
10439         }
10440
10441         kfree(pf->qp_pile);
10442         kfree(pf->vsi);
10443
10444         iounmap(pf->hw.hw_addr);
10445         kfree(pf);
10446         pci_release_selected_regions(pdev,
10447                                      pci_select_bars(pdev, IORESOURCE_MEM));
10448
10449         pci_disable_pcie_error_reporting(pdev);
10450         pci_disable_device(pdev);
10451 }
10452
10453 /**
10454  * i40e_pci_error_detected - warning that something funky happened in PCI land
10455  * @pdev: PCI device information struct
10456  *
10457  * Called to warn that something happened and the error handling steps
10458  * are in progress.  Allows the driver to quiesce things, be ready for
10459  * remediation.
10460  **/
10461 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10462                                                 enum pci_channel_state error)
10463 {
10464         struct i40e_pf *pf = pci_get_drvdata(pdev);
10465
10466         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10467
10468         /* shutdown all operations */
10469         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10470                 rtnl_lock();
10471                 i40e_prep_for_reset(pf);
10472                 rtnl_unlock();
10473         }
10474
10475         /* Request a slot reset */
10476         return PCI_ERS_RESULT_NEED_RESET;
10477 }
10478
10479 /**
10480  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10481  * @pdev: PCI device information struct
10482  *
10483  * Called to find if the driver can work with the device now that
10484  * the pci slot has been reset.  If a basic connection seems good
10485  * (registers are readable and have sane content) then return a
10486  * happy little PCI_ERS_RESULT_xxx.
10487  **/
10488 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10489 {
10490         struct i40e_pf *pf = pci_get_drvdata(pdev);
10491         pci_ers_result_t result;
10492         int err;
10493         u32 reg;
10494
10495         dev_dbg(&pdev->dev, "%s\n", __func__);
10496         if (pci_enable_device_mem(pdev)) {
10497                 dev_info(&pdev->dev,
10498                          "Cannot re-enable PCI device after reset.\n");
10499                 result = PCI_ERS_RESULT_DISCONNECT;
10500         } else {
10501                 pci_set_master(pdev);
10502                 pci_restore_state(pdev);
10503                 pci_save_state(pdev);
10504                 pci_wake_from_d3(pdev, false);
10505
10506                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10507                 if (reg == 0)
10508                         result = PCI_ERS_RESULT_RECOVERED;
10509                 else
10510                         result = PCI_ERS_RESULT_DISCONNECT;
10511         }
10512
10513         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10514         if (err) {
10515                 dev_info(&pdev->dev,
10516                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10517                          err);
10518                 /* non-fatal, continue */
10519         }
10520
10521         return result;
10522 }
10523
10524 /**
10525  * i40e_pci_error_resume - restart operations after PCI error recovery
10526  * @pdev: PCI device information struct
10527  *
10528  * Called to allow the driver to bring things back up after PCI error
10529  * and/or reset recovery has finished.
10530  **/
10531 static void i40e_pci_error_resume(struct pci_dev *pdev)
10532 {
10533         struct i40e_pf *pf = pci_get_drvdata(pdev);
10534
10535         dev_dbg(&pdev->dev, "%s\n", __func__);
10536         if (test_bit(__I40E_SUSPENDED, &pf->state))
10537                 return;
10538
10539         rtnl_lock();
10540         i40e_handle_reset_warning(pf);
10541         rtnl_unlock();
10542 }
10543
10544 /**
10545  * i40e_shutdown - PCI callback for shutting down
10546  * @pdev: PCI device information struct
10547  **/
10548 static void i40e_shutdown(struct pci_dev *pdev)
10549 {
10550         struct i40e_pf *pf = pci_get_drvdata(pdev);
10551         struct i40e_hw *hw = &pf->hw;
10552
10553         set_bit(__I40E_SUSPENDED, &pf->state);
10554         set_bit(__I40E_DOWN, &pf->state);
10555         rtnl_lock();
10556         i40e_prep_for_reset(pf);
10557         rtnl_unlock();
10558
10559         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10560         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10561
10562         del_timer_sync(&pf->service_timer);
10563         cancel_work_sync(&pf->service_task);
10564         i40e_fdir_teardown(pf);
10565
10566         rtnl_lock();
10567         i40e_prep_for_reset(pf);
10568         rtnl_unlock();
10569
10570         wr32(hw, I40E_PFPM_APM,
10571              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10572         wr32(hw, I40E_PFPM_WUFC,
10573              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10574
10575         i40e_clear_interrupt_scheme(pf);
10576
10577         if (system_state == SYSTEM_POWER_OFF) {
10578                 pci_wake_from_d3(pdev, pf->wol_en);
10579                 pci_set_power_state(pdev, PCI_D3hot);
10580         }
10581 }
10582
10583 #ifdef CONFIG_PM
10584 /**
10585  * i40e_suspend - PCI callback for moving to D3
10586  * @pdev: PCI device information struct
10587  **/
10588 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10589 {
10590         struct i40e_pf *pf = pci_get_drvdata(pdev);
10591         struct i40e_hw *hw = &pf->hw;
10592
10593         set_bit(__I40E_SUSPENDED, &pf->state);
10594         set_bit(__I40E_DOWN, &pf->state);
10595
10596         rtnl_lock();
10597         i40e_prep_for_reset(pf);
10598         rtnl_unlock();
10599
10600         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10601         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10602
10603         pci_wake_from_d3(pdev, pf->wol_en);
10604         pci_set_power_state(pdev, PCI_D3hot);
10605
10606         return 0;
10607 }
10608
10609 /**
10610  * i40e_resume - PCI callback for waking up from D3
10611  * @pdev: PCI device information struct
10612  **/
10613 static int i40e_resume(struct pci_dev *pdev)
10614 {
10615         struct i40e_pf *pf = pci_get_drvdata(pdev);
10616         u32 err;
10617
10618         pci_set_power_state(pdev, PCI_D0);
10619         pci_restore_state(pdev);
10620         /* pci_restore_state() clears dev->state_saves, so
10621          * call pci_save_state() again to restore it.
10622          */
10623         pci_save_state(pdev);
10624
10625         err = pci_enable_device_mem(pdev);
10626         if (err) {
10627                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
10628                 return err;
10629         }
10630         pci_set_master(pdev);
10631
10632         /* no wakeup events while running */
10633         pci_wake_from_d3(pdev, false);
10634
10635         /* handling the reset will rebuild the device state */
10636         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10637                 clear_bit(__I40E_DOWN, &pf->state);
10638                 rtnl_lock();
10639                 i40e_reset_and_rebuild(pf, false);
10640                 rtnl_unlock();
10641         }
10642
10643         return 0;
10644 }
10645
10646 #endif
10647 static const struct pci_error_handlers i40e_err_handler = {
10648         .error_detected = i40e_pci_error_detected,
10649         .slot_reset = i40e_pci_error_slot_reset,
10650         .resume = i40e_pci_error_resume,
10651 };
10652
10653 static struct pci_driver i40e_driver = {
10654         .name     = i40e_driver_name,
10655         .id_table = i40e_pci_tbl,
10656         .probe    = i40e_probe,
10657         .remove   = i40e_remove,
10658 #ifdef CONFIG_PM
10659         .suspend  = i40e_suspend,
10660         .resume   = i40e_resume,
10661 #endif
10662         .shutdown = i40e_shutdown,
10663         .err_handler = &i40e_err_handler,
10664         .sriov_configure = i40e_pci_sriov_configure,
10665 };
10666
10667 /**
10668  * i40e_init_module - Driver registration routine
10669  *
10670  * i40e_init_module is the first routine called when the driver is
10671  * loaded. All it does is register with the PCI subsystem.
10672  **/
10673 static int __init i40e_init_module(void)
10674 {
10675         pr_info("%s: %s - version %s\n", i40e_driver_name,
10676                 i40e_driver_string, i40e_driver_version_str);
10677         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10678
10679         i40e_dbg_init();
10680         return pci_register_driver(&i40e_driver);
10681 }
10682 module_init(i40e_init_module);
10683
10684 /**
10685  * i40e_exit_module - Driver exit cleanup routine
10686  *
10687  * i40e_exit_module is called just before the driver is removed
10688  * from memory.
10689  **/
10690 static void __exit i40e_exit_module(void)
10691 {
10692         pci_unregister_driver(&i40e_driver);
10693         i40e_dbg_exit();
10694 }
10695 module_exit(i40e_exit_module);